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Finding the Fourth Proportional to 487,501.76, 672,732.50 and 283,558.52

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Solution

The fourth proportional to 487,501.76, 672,732.50 and 283,558.52 is: 391,299.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,501.76 : 672,732.50 = 283,558.52 : x
  2. Step 2: Convert to fraction form
    487,501.76/672,732.50 = 283,558.52/x
  3. Step 3: Cross multiply
    487,501.76x = 672,732.50 × 283,558.52
  4. Step 4: Simplify right side
    487,501.76x = 190,759,027,274.45
  5. Step 5: Solve for x
    x = 190,759,027,274.45/487,501.76
  6. Step 6: Final answer
    x = 391,299.16

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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.