Home / 753,553.20-1,040,176.80-498,986.40

Finding the Fourth Proportional to 753,553.20, 1,040,176.80 and 498,986.40

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Solution

The fourth proportional to 753,553.20, 1,040,176.80 and 498,986.40 is: 688,782.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,553.20 : 1,040,176.80 = 498,986.40 : x
  2. Step 2: Convert to fraction form
    753,553.20/1,040,176.80 = 498,986.40/x
  3. Step 3: Cross multiply
    753,553.20x = 1,040,176.80 × 498,986.40
  4. Step 4: Simplify right side
    753,553.20x = 519,034,076,795.52
  5. Step 5: Solve for x
    x = 519,034,076,795.52/753,553.20
  6. Step 6: Final answer
    x = 688,782.26

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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.