Home / 745,781.20-1,116,047.40-520,082.80

Finding the Fourth Proportional to 745,781.20, 1,116,047.40 and 520,082.80

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Solution

The fourth proportional to 745,781.20, 1,116,047.40 and 520,082.80 is: 778,294.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,781.20 : 1,116,047.40 = 520,082.80 : x
  2. Step 2: Convert to fraction form
    745,781.20/1,116,047.40 = 520,082.80/x
  3. Step 3: Cross multiply
    745,781.20x = 1,116,047.40 × 520,082.80
  4. Step 4: Simplify right side
    745,781.20x = 580,437,056,724.72
  5. Step 5: Solve for x
    x = 580,437,056,724.72/745,781.20
  6. Step 6: Final answer
    x = 778,294.03

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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.