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Finding the Fourth Proportional to 657,532, 907,400.72 and 355,732.48

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Solution

The fourth proportional to 657,532, 907,400.72 and 355,732.48 is: 490,914.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,532 : 907,400.72 = 355,732.48 : x
  2. Step 2: Convert to fraction form
    657,532/907,400.72 = 355,732.48/x
  3. Step 3: Cross multiply
    657,532x = 907,400.72 × 355,732.48
  4. Step 4: Simplify right side
    657,532x = 322,791,908,479.39
  5. Step 5: Solve for x
    x = 322,791,908,479.39/657,532
  6. Step 6: Final answer
    x = 490,914.37

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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.