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Finding the Fourth Proportional to 424,871.40, 637,307.10 and 297,690.60

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Solution

The fourth proportional to 424,871.40, 637,307.10 and 297,690.60 is: 446,535.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,871.40 : 637,307.10 = 297,690.60 : x
  2. Step 2: Convert to fraction form
    424,871.40/637,307.10 = 297,690.60/x
  3. Step 3: Cross multiply
    424,871.40x = 637,307.10 × 297,690.60
  4. Step 4: Simplify right side
    424,871.40x = 189,720,332,983.26
  5. Step 5: Solve for x
    x = 189,720,332,983.26/424,871.40
  6. Step 6: Final answer
    x = 446,535.90

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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.