Home / 7,920,456,098.85-11,880,684,148.28-3,988,643,004.45

Finding the Fourth Proportional to 7,920,456,098.85, 11,880,684,148.28 and 3,988,643,004.45

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Solution

The fourth proportional to 7,920,456,098.85, 11,880,684,148.28 and 3,988,643,004.45 is: 5,982,964,506.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920,456,098.85 : 11,880,684,148.28 = 3,988,643,004.45 : x
  2. Step 2: Convert to fraction form
    7,920,456,098.85/11,880,684,148.28 = 3,988,643,004.45/x
  3. Step 3: Cross multiply
    7,920,456,098.85x = 11,880,684,148.28 × 3,988,643,004.45
  4. Step 4: Simplify right side
    7,920,456,098.85x = 47,387,807,716,097,081,344
  5. Step 5: Solve for x
    x = 47,387,807,716,097,081,344/7,920,456,098.85
  6. Step 6: Final answer
    x = 5,982,964,506.68

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Double scale
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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.