Home / 918,138.80-1,376,552.10-412,285.70

Finding the Fourth Proportional to 918,138.80, 1,376,552.10 and 412,285.70

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Solution

The fourth proportional to 918,138.80, 1,376,552.10 and 412,285.70 is: 618,133.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,138.80 : 1,376,552.10 = 412,285.70 : x
  2. Step 2: Convert to fraction form
    918,138.80/1,376,552.10 = 412,285.70/x
  3. Step 3: Cross multiply
    918,138.80x = 1,376,552.10 × 412,285.70
  4. Step 4: Simplify right side
    918,138.80x = 567,532,746,134.97
  5. Step 5: Solve for x
    x = 567,532,746,134.97/918,138.80
  6. Step 6: Final answer
    x = 618,133.93

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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.