Home / 991,901.20-1,487,851.80-494,237.20

Finding the Fourth Proportional to 991,901.20, 1,487,851.80 and 494,237.20

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Solution

The fourth proportional to 991,901.20, 1,487,851.80 and 494,237.20 is: 741,355.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,901.20 : 1,487,851.80 = 494,237.20 : x
  2. Step 2: Convert to fraction form
    991,901.20/1,487,851.80 = 494,237.20/x
  3. Step 3: Cross multiply
    991,901.20x = 1,487,851.80 × 494,237.20
  4. Step 4: Simplify right side
    991,901.20x = 735,351,707,646.96
  5. Step 5: Solve for x
    x = 735,351,707,646.96/991,901.20
  6. Step 6: Final answer
    x = 741,355.80

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Double scale
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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.