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Finding the Fourth Proportional to 657,480.16, 907,322.16 and 355,674.40

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Solution

The fourth proportional to 657,480.16, 907,322.16 and 355,674.40 is: 490,830.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,480.16 : 907,322.16 = 355,674.40 : x
  2. Step 2: Convert to fraction form
    657,480.16/907,322.16 = 355,674.40/x
  3. Step 3: Cross multiply
    657,480.16x = 907,322.16 × 355,674.40
  4. Step 4: Simplify right side
    657,480.16x = 322,711,264,864.70
  5. Step 5: Solve for x
    x = 322,711,264,864.70/657,480.16
  6. Step 6: Final answer
    x = 490,830.42

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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.