Home / 915,640.20-1,373,460.30-417,976.20

Finding the Fourth Proportional to 915,640.20, 1,373,460.30 and 417,976.20

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Solution

The fourth proportional to 915,640.20, 1,373,460.30 and 417,976.20 is: 626,964.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,640.20 : 1,373,460.30 = 417,976.20 : x
  2. Step 2: Convert to fraction form
    915,640.20/1,373,460.30 = 417,976.20/x
  3. Step 3: Cross multiply
    915,640.20x = 1,373,460.30 × 417,976.20
  4. Step 4: Simplify right side
    915,640.20x = 574,073,717,044.86
  5. Step 5: Solve for x
    x = 574,073,717,044.86/915,640.20
  6. Step 6: Final answer
    x = 626,964.30

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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.