Home / 840,734.04-1,160,247.84-478,221.72

Finding the Fourth Proportional to 840,734.04, 1,160,247.84 and 478,221.72

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Solution

The fourth proportional to 840,734.04, 1,160,247.84 and 478,221.72 is: 659,965.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,734.04 : 1,160,247.84 = 478,221.72 : x
  2. Step 2: Convert to fraction form
    840,734.04/1,160,247.84 = 478,221.72/x
  3. Step 3: Cross multiply
    840,734.04x = 1,160,247.84 × 478,221.72
  4. Step 4: Simplify right side
    840,734.04x = 554,855,717,671.09
  5. Step 5: Solve for x
    x = 554,855,717,671.09/840,734.04
  6. Step 6: Final answer
    x = 659,965.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.