Home / 1,119,746,918.40-1,679,620,377.60-392,473,190.40

Finding the Fourth Proportional to 1,119,746,918.40, 1,679,620,377.60 and 392,473,190.40

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Solution

The fourth proportional to 1,119,746,918.40, 1,679,620,377.60 and 392,473,190.40 is: 588,709,785.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,746,918.40 : 1,679,620,377.60 = 392,473,190.40 : x
  2. Step 2: Convert to fraction form
    1,119,746,918.40/1,679,620,377.60 = 392,473,190.40/x
  3. Step 3: Cross multiply
    1,119,746,918.40x = 1,679,620,377.60 × 392,473,190.40
  4. Step 4: Simplify right side
    1,119,746,918.40x = 659,205,968,257,524,608
  5. Step 5: Solve for x
    x = 659,205,968,257,524,608/1,119,746,918.40
  6. Step 6: Final answer
    x = 588,709,785.60

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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.