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Finding the Fourth Proportional to 693,344.40, 956,798.10 and 387,402

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Solution

The fourth proportional to 693,344.40, 956,798.10 and 387,402 is: 534,605.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,344.40 : 956,798.10 = 387,402 : x
  2. Step 2: Convert to fraction form
    693,344.40/956,798.10 = 387,402/x
  3. Step 3: Cross multiply
    693,344.40x = 956,798.10 × 387,402
  4. Step 4: Simplify right side
    693,344.40x = 370,665,497,536.20
  5. Step 5: Solve for x
    x = 370,665,497,536.20/693,344.40
  6. Step 6: Final answer
    x = 534,605.17

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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.