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Finding the Fourth Proportional to 657,278.86, 907,045.43 and 355,472.86

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Solution

The fourth proportional to 657,278.86, 907,045.43 and 355,472.86 is: 490,552.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,278.86 : 907,045.43 = 355,472.86 : x
  2. Step 2: Convert to fraction form
    657,278.86/907,045.43 = 355,472.86/x
  3. Step 3: Cross multiply
    657,278.86x = 907,045.43 × 355,472.86
  4. Step 4: Simplify right side
    657,278.86x = 322,430,033,152.03
  5. Step 5: Solve for x
    x = 322,430,033,152.03/657,278.86
  6. Step 6: Final answer
    x = 490,552.87

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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.