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Finding the Fourth Proportional to 424,940.90, 637,411.35 and 400,009.10

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Solution

The fourth proportional to 424,940.90, 637,411.35 and 400,009.10 is: 600,013.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,940.90 : 637,411.35 = 400,009.10 : x
  2. Step 2: Convert to fraction form
    424,940.90/637,411.35 = 400,009.10/x
  3. Step 3: Cross multiply
    424,940.90x = 637,411.35 × 400,009.10
  4. Step 4: Simplify right side
    424,940.90x = 254,970,340,443.29
  5. Step 5: Solve for x
    x = 254,970,340,443.29/424,940.90
  6. Step 6: Final answer
    x = 600,013.65

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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.