Home / 728,280.24-1,005,026.84-405,983.40

Finding the Fourth Proportional to 728,280.24, 1,005,026.84 and 405,983.40

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Solution

The fourth proportional to 728,280.24, 1,005,026.84 and 405,983.40 is: 560,257.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,280.24 : 1,005,026.84 = 405,983.40 : x
  2. Step 2: Convert to fraction form
    728,280.24/1,005,026.84 = 405,983.40/x
  3. Step 3: Cross multiply
    728,280.24x = 1,005,026.84 × 405,983.40
  4. Step 4: Simplify right side
    728,280.24x = 408,024,213,594.46
  5. Step 5: Solve for x
    x = 408,024,213,594.46/728,280.24
  6. Step 6: Final answer
    x = 560,257.15

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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.