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Finding the Fourth Proportional to 657,717.12, 986,880.18 and 357,840.48

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Solution

The fourth proportional to 657,717.12, 986,880.18 and 357,840.48 is: 536,926.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,717.12 : 986,880.18 = 357,840.48 : x
  2. Step 2: Convert to fraction form
    657,717.12/986,880.18 = 357,840.48/x
  3. Step 3: Cross multiply
    657,717.12x = 986,880.18 × 357,840.48
  4. Step 4: Simplify right side
    657,717.12x = 353,145,677,313.69
  5. Step 5: Solve for x
    x = 353,145,677,313.69/657,717.12
  6. Step 6: Final answer
    x = 536,926.39

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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.