Home / 728,680.08-1,005,700.50-442,390.80

Finding the Fourth Proportional to 728,680.08, 1,005,700.50 and 442,390.80

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Solution

The fourth proportional to 728,680.08, 1,005,700.50 and 442,390.80 is: 610,573.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,680.08 : 1,005,700.50 = 442,390.80 : x
  2. Step 2: Convert to fraction form
    728,680.08/1,005,700.50 = 442,390.80/x
  3. Step 3: Cross multiply
    728,680.08x = 1,005,700.50 × 442,390.80
  4. Step 4: Simplify right side
    728,680.08x = 444,912,648,755.40
  5. Step 5: Solve for x
    x = 444,912,648,755.40/728,680.08
  6. Step 6: Final answer
    x = 610,573.37

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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.