Home / 874,705.12-1,312,132.80-243,618.88

Finding the Fourth Proportional to 874,705.12, 1,312,132.80 and 243,618.88

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Solution

The fourth proportional to 874,705.12, 1,312,132.80 and 243,618.88 is: 365,449.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,705.12 : 1,312,132.80 = 243,618.88 : x
  2. Step 2: Convert to fraction form
    874,705.12/1,312,132.80 = 243,618.88/x
  3. Step 3: Cross multiply
    874,705.12x = 1,312,132.80 × 243,618.88
  4. Step 4: Simplify right side
    874,705.12x = 319,660,323,147.26
  5. Step 5: Solve for x
    x = 319,660,323,147.26/874,705.12
  6. Step 6: Final answer
    x = 365,449.24

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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.