Home / 912,705.70-1,369,836.15-408,043.30

Finding the Fourth Proportional to 912,705.70, 1,369,836.15 and 408,043.30

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Solution

The fourth proportional to 912,705.70, 1,369,836.15 and 408,043.30 is: 612,412.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,705.70 : 1,369,836.15 = 408,043.30 : x
  2. Step 2: Convert to fraction form
    912,705.70/1,369,836.15 = 408,043.30/x
  3. Step 3: Cross multiply
    912,705.70x = 1,369,836.15 × 408,043.30
  4. Step 4: Simplify right side
    912,705.70x = 558,952,463,105.30
  5. Step 5: Solve for x
    x = 558,952,463,105.30/912,705.70
  6. Step 6: Final answer
    x = 612,412.59

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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.