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Finding the Fourth Proportional to 657,752.16, 907,678.80 and 371,298.90

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Solution

The fourth proportional to 657,752.16, 907,678.80 and 371,298.90 is: 512,381.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,752.16 : 907,678.80 = 371,298.90 : x
  2. Step 2: Convert to fraction form
    657,752.16/907,678.80 = 371,298.90/x
  3. Step 3: Cross multiply
    657,752.16x = 907,678.80 × 371,298.90
  4. Step 4: Simplify right side
    657,752.16x = 337,020,139,993.32
  5. Step 5: Solve for x
    x = 337,020,139,993.32/657,752.16
  6. Step 6: Final answer
    x = 512,381.65

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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.