Home / 828,005.70-1,242,008.55-560,316.90

Finding the Fourth Proportional to 828,005.70, 1,242,008.55 and 560,316.90

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Solution

The fourth proportional to 828,005.70, 1,242,008.55 and 560,316.90 is: 840,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,005.70 : 1,242,008.55 = 560,316.90 : x
  2. Step 2: Convert to fraction form
    828,005.70/1,242,008.55 = 560,316.90/x
  3. Step 3: Cross multiply
    828,005.70x = 1,242,008.55 × 560,316.90
  4. Step 4: Simplify right side
    828,005.70x = 695,918,380,509.50
  5. Step 5: Solve for x
    x = 695,918,380,509.50/828,005.70
  6. Step 6: Final answer
    x = 840,475.35

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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.