Home / 10,428,984,047.20-15,643,476,070.80-7,122,995,874.40

Finding the Fourth Proportional to 10,428,984,047.20, 15,643,476,070.80 and 7,122,995,874.40

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Solution

The fourth proportional to 10,428,984,047.20, 15,643,476,070.80 and 7,122,995,874.40 is: 10,684,493,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428,984,047.20 : 15,643,476,070.80 = 7,122,995,874.40 : x
  2. Step 2: Convert to fraction form
    10,428,984,047.20/15,643,476,070.80 = 7,122,995,874.40/x
  3. Step 3: Cross multiply
    10,428,984,047.20x = 15,643,476,070.80 × 7,122,995,874.40
  4. Step 4: Simplify right side
    10,428,984,047.20x = 111,428,415,513,583,517,696
  5. Step 5: Solve for x
    x = 111,428,415,513,583,517,696/10,428,984,047.20
  6. Step 6: Final answer
    x = 10,684,493,811.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.