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Finding the Fourth Proportional to 551,332, 760,781.44 and 309,612.62

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Solution

The fourth proportional to 551,332, 760,781.44 and 309,612.62 is: 427,233.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,332 : 760,781.44 = 309,612.62 : x
  2. Step 2: Convert to fraction form
    551,332/760,781.44 = 309,612.62/x
  3. Step 3: Cross multiply
    551,332x = 760,781.44 × 309,612.62
  4. Step 4: Simplify right side
    551,332x = 235,547,534,885.77
  5. Step 5: Solve for x
    x = 235,547,534,885.77/551,332
  6. Step 6: Final answer
    x = 427,233.56

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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.