Home / 752,531.47-1,038,485.55-421,388.06

Finding the Fourth Proportional to 752,531.47, 1,038,485.55 and 421,388.06

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Solution

The fourth proportional to 752,531.47, 1,038,485.55 and 421,388.06 is: 581,511.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,531.47 : 1,038,485.55 = 421,388.06 : x
  2. Step 2: Convert to fraction form
    752,531.47/1,038,485.55 = 421,388.06/x
  3. Step 3: Cross multiply
    752,531.47x = 1,038,485.55 × 421,388.06
  4. Step 4: Simplify right side
    752,531.47x = 437,605,405,106.05
  5. Step 5: Solve for x
    x = 437,605,405,106.05/752,531.47
  6. Step 6: Final answer
    x = 581,511.11

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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.