Home / 742,518.86-1,024,676.45-402,987.11

Finding the Fourth Proportional to 742,518.86, 1,024,676.45 and 402,987.11

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Solution

The fourth proportional to 742,518.86, 1,024,676.45 and 402,987.11 is: 556,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,518.86 : 1,024,676.45 = 402,987.11 : x
  2. Step 2: Convert to fraction form
    742,518.86/1,024,676.45 = 402,987.11/x
  3. Step 3: Cross multiply
    742,518.86x = 1,024,676.45 × 402,987.11
  4. Step 4: Simplify right side
    742,518.86x = 412,931,404,839.72
  5. Step 5: Solve for x
    x = 412,931,404,839.72/742,518.86
  6. Step 6: Final answer
    x = 556,122.44

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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.