Home / 912,700.20-1,369,827.90-408,037.80

Finding the Fourth Proportional to 912,700.20, 1,369,827.90 and 408,037.80

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Solution

The fourth proportional to 912,700.20, 1,369,827.90 and 408,037.80 is: 612,404.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,700.20 : 1,369,827.90 = 408,037.80 : x
  2. Step 2: Convert to fraction form
    912,700.20/1,369,827.90 = 408,037.80/x
  3. Step 3: Cross multiply
    912,700.20x = 1,369,827.90 × 408,037.80
  4. Step 4: Simplify right side
    912,700.20x = 558,941,562,694.62
  5. Step 5: Solve for x
    x = 558,941,562,694.62/912,700.20
  6. Step 6: Final answer
    x = 612,404.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.