Home / 485,301.48-724,155.97-434,867.64

Finding the Fourth Proportional to 485,301.48, 724,155.97 and 434,867.64

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Solution

The fourth proportional to 485,301.48, 724,155.97 and 434,867.64 is: 648,899.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,301.48 : 724,155.97 = 434,867.64 : x
  2. Step 2: Convert to fraction form
    485,301.48/724,155.97 = 434,867.64/x
  3. Step 3: Cross multiply
    485,301.48x = 724,155.97 × 434,867.64
  4. Step 4: Simplify right side
    485,301.48x = 314,911,997,665.81
  5. Step 5: Solve for x
    x = 314,911,997,665.81/485,301.48
  6. Step 6: Final answer
    x = 648,899.73

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.