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Finding the Fourth Proportional to 499,260.40, 748,890.60 and 489,929.20

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Solution

The fourth proportional to 499,260.40, 748,890.60 and 489,929.20 is: 734,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,260.40 : 748,890.60 = 489,929.20 : x
  2. Step 2: Convert to fraction form
    499,260.40/748,890.60 = 489,929.20/x
  3. Step 3: Cross multiply
    499,260.40x = 748,890.60 × 489,929.20
  4. Step 4: Simplify right side
    499,260.40x = 366,903,372,545.52
  5. Step 5: Solve for x
    x = 366,903,372,545.52/499,260.40
  6. Step 6: Final answer
    x = 734,893.80

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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.