Home / 905,128.92-1,249,037.28-542,752.92

Finding the Fourth Proportional to 905,128.92, 1,249,037.28 and 542,752.92

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Solution

The fourth proportional to 905,128.92, 1,249,037.28 and 542,752.92 is: 748,974.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,128.92 : 1,249,037.28 = 542,752.92 : x
  2. Step 2: Convert to fraction form
    905,128.92/1,249,037.28 = 542,752.92/x
  3. Step 3: Cross multiply
    905,128.92x = 1,249,037.28 × 542,752.92
  4. Step 4: Simplify right side
    905,128.92x = 677,918,630,908.86
  5. Step 5: Solve for x
    x = 677,918,630,908.86/905,128.92
  6. Step 6: Final answer
    x = 748,974.67

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.