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Finding the Fourth Proportional to 424,673.70, 637,010.55 and 291,963.30

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Solution

The fourth proportional to 424,673.70, 637,010.55 and 291,963.30 is: 437,944.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,673.70 : 637,010.55 = 291,963.30 : x
  2. Step 2: Convert to fraction form
    424,673.70/637,010.55 = 291,963.30/x
  3. Step 3: Cross multiply
    424,673.70x = 637,010.55 × 291,963.30
  4. Step 4: Simplify right side
    424,673.70x = 185,983,702,312.82
  5. Step 5: Solve for x
    x = 185,983,702,312.82/424,673.70
  6. Step 6: Final answer
    x = 437,944.95

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Double scale
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Similar ratio
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1.5x scale

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.