Home / 912,701.70-1,369,830.15-408,039.30

Finding the Fourth Proportional to 912,701.70, 1,369,830.15 and 408,039.30

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Solution

The fourth proportional to 912,701.70, 1,369,830.15 and 408,039.30 is: 612,406.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,701.70 : 1,369,830.15 = 408,039.30 : x
  2. Step 2: Convert to fraction form
    912,701.70/1,369,830.15 = 408,039.30/x
  3. Step 3: Cross multiply
    912,701.70x = 1,369,830.15 × 408,039.30
  4. Step 4: Simplify right side
    912,701.70x = 558,944,535,524.90
  5. Step 5: Solve for x
    x = 558,944,535,524.90/912,701.70
  6. Step 6: Final answer
    x = 612,406.59

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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.