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Finding the Fourth Proportional to 657,728.62, 907,049.50 and 436,574.78

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Solution

The fourth proportional to 657,728.62, 907,049.50 and 436,574.78 is: 602,064.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,728.62 : 907,049.50 = 436,574.78 : x
  2. Step 2: Convert to fraction form
    657,728.62/907,049.50 = 436,574.78/x
  3. Step 3: Cross multiply
    657,728.62x = 907,049.50 × 436,574.78
  4. Step 4: Simplify right side
    657,728.62x = 395,994,935,911.61
  5. Step 5: Solve for x
    x = 395,994,935,911.61/657,728.62
  6. Step 6: Final answer
    x = 602,064.32

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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.