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Finding the Fourth Proportional to 493,669.20, 740,503.80 and 283,328.40

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Solution

The fourth proportional to 493,669.20, 740,503.80 and 283,328.40 is: 424,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,669.20 : 740,503.80 = 283,328.40 : x
  2. Step 2: Convert to fraction form
    493,669.20/740,503.80 = 283,328.40/x
  3. Step 3: Cross multiply
    493,669.20x = 740,503.80 × 283,328.40
  4. Step 4: Simplify right side
    493,669.20x = 209,805,756,847.92
  5. Step 5: Solve for x
    x = 209,805,756,847.92/493,669.20
  6. Step 6: Final answer
    x = 424,992.60

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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.