Home / 755,328.80-1,130,660.40-438,845.60

Finding the Fourth Proportional to 755,328.80, 1,130,660.40 and 438,845.60

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Solution

The fourth proportional to 755,328.80, 1,130,660.40 and 438,845.60 is: 656,913.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,328.80 : 1,130,660.40 = 438,845.60 : x
  2. Step 2: Convert to fraction form
    755,328.80/1,130,660.40 = 438,845.60/x
  3. Step 3: Cross multiply
    755,328.80x = 1,130,660.40 × 438,845.60
  4. Step 4: Simplify right side
    755,328.80x = 496,185,341,634.24
  5. Step 5: Solve for x
    x = 496,185,341,634.24/755,328.80
  6. Step 6: Final answer
    x = 656,913.04

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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.