Home / 872,155.40-1,308,233.10-472,987.40

Finding the Fourth Proportional to 872,155.40, 1,308,233.10 and 472,987.40

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Solution

The fourth proportional to 872,155.40, 1,308,233.10 and 472,987.40 is: 709,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,155.40 : 1,308,233.10 = 472,987.40 : x
  2. Step 2: Convert to fraction form
    872,155.40/1,308,233.10 = 472,987.40/x
  3. Step 3: Cross multiply
    872,155.40x = 1,308,233.10 × 472,987.40
  4. Step 4: Simplify right side
    872,155.40x = 618,777,772,562.94
  5. Step 5: Solve for x
    x = 618,777,772,562.94/872,155.40
  6. Step 6: Final answer
    x = 709,481.10

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