Home / 285,828,043.38-428,744,699.19-81,356,062.74

Finding the Fourth Proportional to 285,828,043.38, 428,744,699.19 and 81,356,062.74

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Solution

The fourth proportional to 285,828,043.38, 428,744,699.19 and 81,356,062.74 is: 122,034,843.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,828,043.38 : 428,744,699.19 = 81,356,062.74 : x
  2. Step 2: Convert to fraction form
    285,828,043.38/428,744,699.19 = 81,356,062.74/x
  3. Step 3: Cross multiply
    285,828,043.38x = 428,744,699.19 × 81,356,062.74
  4. Step 4: Simplify right side
    285,828,043.38x = 34,880,980,646,744,064
  5. Step 5: Solve for x
    x = 34,880,980,646,744,064/285,828,043.38
  6. Step 6: Final answer
    x = 122,034,843.87

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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.