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Finding the Fourth Proportional to 424,999.68, 638,384.85 and 358,569.96

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Solution

The fourth proportional to 424,999.68, 638,384.85 and 358,569.96 is: 538,601.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,999.68 : 638,384.85 = 358,569.96 : x
  2. Step 2: Convert to fraction form
    424,999.68/638,384.85 = 358,569.96/x
  3. Step 3: Cross multiply
    424,999.68x = 638,384.85 × 358,569.96
  4. Step 4: Simplify right side
    424,999.68x = 228,905,630,129.11
  5. Step 5: Solve for x
    x = 228,905,630,129.11/424,999.68
  6. Step 6: Final answer
    x = 538,601.89

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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.