Home / 831,702.30-1,247,553.45-660,460.20

Finding the Fourth Proportional to 831,702.30, 1,247,553.45 and 660,460.20

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Solution

The fourth proportional to 831,702.30, 1,247,553.45 and 660,460.20 is: 990,690.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,702.30 : 1,247,553.45 = 660,460.20 : x
  2. Step 2: Convert to fraction form
    831,702.30/1,247,553.45 = 660,460.20/x
  3. Step 3: Cross multiply
    831,702.30x = 1,247,553.45 × 660,460.20
  4. Step 4: Simplify right side
    831,702.30x = 823,959,401,097.69
  5. Step 5: Solve for x
    x = 823,959,401,097.69/831,702.30
  6. Step 6: Final answer
    x = 990,690.30

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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.