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Finding the Fourth Proportional to 657,553.82, 907,372.58 and 402,870.38

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Solution

The fourth proportional to 657,553.82, 907,372.58 and 402,870.38 is: 555,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,553.82 : 907,372.58 = 402,870.38 : x
  2. Step 2: Convert to fraction form
    657,553.82/907,372.58 = 402,870.38/x
  3. Step 3: Cross multiply
    657,553.82x = 907,372.58 × 402,870.38
  4. Step 4: Simplify right side
    657,553.82x = 365,553,536,106.18
  5. Step 5: Solve for x
    x = 365,553,536,106.18/657,553.82
  6. Step 6: Final answer
    x = 555,929.45

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1.5x scale

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.