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Finding the Fourth Proportional to 587,752.86, 811,187.60 and 358,443.18

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Solution

The fourth proportional to 587,752.86, 811,187.60 and 358,443.18 is: 494,705.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,752.86 : 811,187.60 = 358,443.18 : x
  2. Step 2: Convert to fraction form
    587,752.86/811,187.60 = 358,443.18/x
  3. Step 3: Cross multiply
    587,752.86x = 811,187.60 × 358,443.18
  4. Step 4: Simplify right side
    587,752.86x = 290,764,662,920.57
  5. Step 5: Solve for x
    x = 290,764,662,920.57/587,752.86
  6. Step 6: Final answer
    x = 494,705.65

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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.