Home / 657,860.28-907,869.20-403,162.28

Finding the Fourth Proportional to 657,860.28, 907,869.20 and 403,162.28

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Solution

The fourth proportional to 657,860.28, 907,869.20 and 403,162.28 is: 556,377.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,860.28 : 907,869.20 = 403,162.28 : x
  2. Step 2: Convert to fraction form
    657,860.28/907,869.20 = 403,162.28/x
  3. Step 3: Cross multiply
    657,860.28x = 907,869.20 × 403,162.28
  4. Step 4: Simplify right side
    657,860.28x = 366,018,616,613.78
  5. Step 5: Solve for x
    x = 366,018,616,613.78/657,860.28
  6. Step 6: Final answer
    x = 556,377.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.