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Finding the Fourth Proportional to 424,690.74, 636,502.68 and 254,038.32

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Solution

The fourth proportional to 424,690.74, 636,502.68 and 254,038.32 is: 380,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,690.74 : 636,502.68 = 254,038.32 : x
  2. Step 2: Convert to fraction form
    424,690.74/636,502.68 = 254,038.32/x
  3. Step 3: Cross multiply
    424,690.74x = 636,502.68 × 254,038.32
  4. Step 4: Simplify right side
    424,690.74x = 161,696,071,502.70
  5. Step 5: Solve for x
    x = 161,696,071,502.70/424,690.74
  6. Step 6: Final answer
    x = 380,738.40

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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.