Home / 1,240,714.80-1,861,072.20-442,897.20

Finding the Fourth Proportional to 1,240,714.80, 1,861,072.20 and 442,897.20

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Solution

The fourth proportional to 1,240,714.80, 1,861,072.20 and 442,897.20 is: 664,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,714.80 : 1,861,072.20 = 442,897.20 : x
  2. Step 2: Convert to fraction form
    1,240,714.80/1,861,072.20 = 442,897.20/x
  3. Step 3: Cross multiply
    1,240,714.80x = 1,861,072.20 × 442,897.20
  4. Step 4: Simplify right side
    1,240,714.80x = 824,263,666,377.84
  5. Step 5: Solve for x
    x = 824,263,666,377.84/1,240,714.80
  6. Step 6: Final answer
    x = 664,345.80

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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.