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Finding the Fourth Proportional to 657,376.65, 986,436.77 and 357,877.94

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Solution

The fourth proportional to 657,376.65, 986,436.77 and 357,877.94 is: 537,019.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,376.65 : 986,436.77 = 357,877.94 : x
  2. Step 2: Convert to fraction form
    657,376.65/986,436.77 = 357,877.94/x
  3. Step 3: Cross multiply
    657,376.65x = 986,436.77 × 357,877.94
  4. Step 4: Simplify right side
    657,376.65x = 353,023,952,466.28
  5. Step 5: Solve for x
    x = 353,023,952,466.28/657,376.65
  6. Step 6: Final answer
    x = 537,019.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.