Home / 578,489.60-867,734.40-329,657.60

Finding the Fourth Proportional to 578,489.60, 867,734.40 and 329,657.60

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Solution

The fourth proportional to 578,489.60, 867,734.40 and 329,657.60 is: 494,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,489.60 : 867,734.40 = 329,657.60 : x
  2. Step 2: Convert to fraction form
    578,489.60/867,734.40 = 329,657.60/x
  3. Step 3: Cross multiply
    578,489.60x = 867,734.40 × 329,657.60
  4. Step 4: Simplify right side
    578,489.60x = 286,055,239,741.44
  5. Step 5: Solve for x
    x = 286,055,239,741.44/578,489.60
  6. Step 6: Final answer
    x = 494,486.40

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Half scale
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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.