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Finding the Fourth Proportional to 499,140.30, 747,544.05 and 489,117.90

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Solution

The fourth proportional to 499,140.30, 747,544.05 and 489,117.90 is: 732,533.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,140.30 : 747,544.05 = 489,117.90 : x
  2. Step 2: Convert to fraction form
    499,140.30/747,544.05 = 489,117.90/x
  3. Step 3: Cross multiply
    499,140.30x = 747,544.05 × 489,117.90
  4. Step 4: Simplify right side
    499,140.30x = 365,637,175,893.50
  5. Step 5: Solve for x
    x = 365,637,175,893.50/499,140.30
  6. Step 6: Final answer
    x = 732,533.87

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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.