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Finding the Fourth Proportional to 648,670.70, 973,006.05 and 424,721.90

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Solution

The fourth proportional to 648,670.70, 973,006.05 and 424,721.90 is: 637,082.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,670.70 : 973,006.05 = 424,721.90 : x
  2. Step 2: Convert to fraction form
    648,670.70/973,006.05 = 424,721.90/x
  3. Step 3: Cross multiply
    648,670.70x = 973,006.05 × 424,721.90
  4. Step 4: Simplify right side
    648,670.70x = 413,256,978,267.50
  5. Step 5: Solve for x
    x = 413,256,978,267.50/648,670.70
  6. Step 6: Final answer
    x = 637,082.85

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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.