Home / 988,437.60-1,364,043.24-535,728.72

Finding the Fourth Proportional to 988,437.60, 1,364,043.24 and 535,728.72

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Solution

The fourth proportional to 988,437.60, 1,364,043.24 and 535,728.72 is: 739,305.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,437.60 : 1,364,043.24 = 535,728.72 : x
  2. Step 2: Convert to fraction form
    988,437.60/1,364,043.24 = 535,728.72/x
  3. Step 3: Cross multiply
    988,437.60x = 1,364,043.24 × 535,728.72
  4. Step 4: Simplify right side
    988,437.60x = 730,757,138,989.85
  5. Step 5: Solve for x
    x = 730,757,138,989.85/988,437.60
  6. Step 6: Final answer
    x = 739,305.28

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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.