Home / 748,705.78-1,123,583.55-432,728.02

Finding the Fourth Proportional to 748,705.78, 1,123,583.55 and 432,728.02

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Solution

The fourth proportional to 748,705.78, 1,123,583.55 and 432,728.02 is: 649,395.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,705.78 : 1,123,583.55 = 432,728.02 : x
  2. Step 2: Convert to fraction form
    748,705.78/1,123,583.55 = 432,728.02/x
  3. Step 3: Cross multiply
    748,705.78x = 1,123,583.55 × 432,728.02
  4. Step 4: Simplify right side
    748,705.78x = 486,206,084,896.07
  5. Step 5: Solve for x
    x = 486,206,084,896.07/748,705.78
  6. Step 6: Final answer
    x = 649,395.39

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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.