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Finding the Fourth Proportional to 424,951.40, 637,427.10 and 400,019.60

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Solution

The fourth proportional to 424,951.40, 637,427.10 and 400,019.60 is: 600,029.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,951.40 : 637,427.10 = 400,019.60 : x
  2. Step 2: Convert to fraction form
    424,951.40/637,427.10 = 400,019.60/x
  3. Step 3: Cross multiply
    424,951.40x = 637,427.10 × 400,019.60
  4. Step 4: Simplify right side
    424,951.40x = 254,983,333,571.16
  5. Step 5: Solve for x
    x = 254,983,333,571.16/424,951.40
  6. Step 6: Final answer
    x = 600,029.40

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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.