Home / 870,257.20-1,305,653.02-415,428.82

Finding the Fourth Proportional to 870,257.20, 1,305,653.02 and 415,428.82

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Solution

The fourth proportional to 870,257.20, 1,305,653.02 and 415,428.82 is: 623,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,257.20 : 1,305,653.02 = 415,428.82 : x
  2. Step 2: Convert to fraction form
    870,257.20/1,305,653.02 = 415,428.82/x
  3. Step 3: Cross multiply
    870,257.20x = 1,305,653.02 × 415,428.82
  4. Step 4: Simplify right side
    870,257.20x = 542,405,897,730.74
  5. Step 5: Solve for x
    x = 542,405,897,730.74/870,257.20
  6. Step 6: Final answer
    x = 623,270.80

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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.