Home / 818,551.20-1,129,654.16-496,290.72

Finding the Fourth Proportional to 818,551.20, 1,129,654.16 and 496,290.72

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Solution

The fourth proportional to 818,551.20, 1,129,654.16 and 496,290.72 is: 684,913.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,551.20 : 1,129,654.16 = 496,290.72 : x
  2. Step 2: Convert to fraction form
    818,551.20/1,129,654.16 = 496,290.72/x
  3. Step 3: Cross multiply
    818,551.20x = 1,129,654.16 × 496,290.72
  4. Step 4: Simplify right side
    818,551.20x = 560,636,876,417.40
  5. Step 5: Solve for x
    x = 560,636,876,417.40/818,551.20
  6. Step 6: Final answer
    x = 684,913.63

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.