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Finding the Fourth Proportional to 879,659.70, 1,319,489.55 and 575,229.30

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Solution

The fourth proportional to 879,659.70, 1,319,489.55 and 575,229.30 is: 862,843.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,659.70 : 1,319,489.55 = 575,229.30 : x
  2. Step 2: Convert to fraction form
    879,659.70/1,319,489.55 = 575,229.30/x
  3. Step 3: Cross multiply
    879,659.70x = 1,319,489.55 × 575,229.30
  4. Step 4: Simplify right side
    879,659.70x = 759,009,050,203.82
  5. Step 5: Solve for x
    x = 759,009,050,203.82/879,659.70
  6. Step 6: Final answer
    x = 862,843.95

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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.