Home / 508,439,897.40-762,659,846.10-163,428,400.20

Finding the Fourth Proportional to 508,439,897.40, 762,659,846.10 and 163,428,400.20

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Solution

The fourth proportional to 508,439,897.40, 762,659,846.10 and 163,428,400.20 is: 245,142,600.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,439,897.40 : 762,659,846.10 = 163,428,400.20 : x
  2. Step 2: Convert to fraction form
    508,439,897.40/762,659,846.10 = 163,428,400.20/x
  3. Step 3: Cross multiply
    508,439,897.40x = 762,659,846.10 × 163,428,400.20
  4. Step 4: Simplify right side
    508,439,897.40x = 124,640,278,544,901,200
  5. Step 5: Solve for x
    x = 124,640,278,544,901,200/508,439,897.40
  6. Step 6: Final answer
    x = 245,142,600.30

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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.