Home / 928,947.20-1,282,049.53-521,088.80

Finding the Fourth Proportional to 928,947.20, 1,282,049.53 and 521,088.80

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Solution

The fourth proportional to 928,947.20, 1,282,049.53 and 521,088.80 is: 719,159.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,947.20 : 1,282,049.53 = 521,088.80 : x
  2. Step 2: Convert to fraction form
    928,947.20/1,282,049.53 = 521,088.80/x
  3. Step 3: Cross multiply
    928,947.20x = 1,282,049.53 × 521,088.80
  4. Step 4: Simplify right side
    928,947.20x = 668,061,643,415.29
  5. Step 5: Solve for x
    x = 668,061,643,415.29/928,947.20
  6. Step 6: Final answer
    x = 719,159.98

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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.