Home / 865,705.20-1,298,557.80-546,840.60

Finding the Fourth Proportional to 865,705.20, 1,298,557.80 and 546,840.60

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Solution

The fourth proportional to 865,705.20, 1,298,557.80 and 546,840.60 is: 820,260.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,705.20 : 1,298,557.80 = 546,840.60 : x
  2. Step 2: Convert to fraction form
    865,705.20/1,298,557.80 = 546,840.60/x
  3. Step 3: Cross multiply
    865,705.20x = 1,298,557.80 × 546,840.60
  4. Step 4: Simplify right side
    865,705.20x = 710,104,126,486.68
  5. Step 5: Solve for x
    x = 710,104,126,486.68/865,705.20
  6. Step 6: Final answer
    x = 820,260.90

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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.