Home / 736,748.80-1,105,123.20-421,237.60

Finding the Fourth Proportional to 736,748.80, 1,105,123.20 and 421,237.60

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Solution

The fourth proportional to 736,748.80, 1,105,123.20 and 421,237.60 is: 631,856.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    736,748.80 : 1,105,123.20 = 421,237.60 : x
  2. Step 2: Convert to fraction form
    736,748.80/1,105,123.20 = 421,237.60/x
  3. Step 3: Cross multiply
    736,748.80x = 1,105,123.20 × 421,237.60
  4. Step 4: Simplify right side
    736,748.80x = 465,519,444,472.32
  5. Step 5: Solve for x
    x = 465,519,444,472.32/736,748.80
  6. Step 6: Final answer
    x = 631,856.40

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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.