Home / 742,518.38-1,024,676.11-402,986.78

Finding the Fourth Proportional to 742,518.38, 1,024,676.11 and 402,986.78

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Solution

The fourth proportional to 742,518.38, 1,024,676.11 and 402,986.78 is: 556,122.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,518.38 : 1,024,676.11 = 402,986.78 : x
  2. Step 2: Convert to fraction form
    742,518.38/1,024,676.11 = 402,986.78/x
  3. Step 3: Cross multiply
    742,518.38x = 1,024,676.11 × 402,986.78
  4. Step 4: Simplify right side
    742,518.38x = 412,930,926,111.83
  5. Step 5: Solve for x
    x = 412,930,926,111.83/742,518.38
  6. Step 6: Final answer
    x = 556,122.16

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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.