Home / 752,275.80-1,038,121.85-421,127.10

Finding the Fourth Proportional to 752,275.80, 1,038,121.85 and 421,127.10

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Solution

The fourth proportional to 752,275.80, 1,038,121.85 and 421,127.10 is: 581,144.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,275.80 : 1,038,121.85 = 421,127.10 : x
  2. Step 2: Convert to fraction form
    752,275.80/1,038,121.85 = 421,127.10/x
  3. Step 3: Cross multiply
    752,275.80x = 1,038,121.85 × 421,127.10
  4. Step 4: Simplify right side
    752,275.80x = 437,181,242,031.50
  5. Step 5: Solve for x
    x = 437,181,242,031.50/752,275.80
  6. Step 6: Final answer
    x = 581,144.90

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.