Home / 768,155.38-1,060,053.60-428,623.66

Finding the Fourth Proportional to 768,155.38, 1,060,053.60 and 428,623.66

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Solution

The fourth proportional to 768,155.38, 1,060,053.60 and 428,623.66 is: 591,500.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,155.38 : 1,060,053.60 = 428,623.66 : x
  2. Step 2: Convert to fraction form
    768,155.38/1,060,053.60 = 428,623.66/x
  3. Step 3: Cross multiply
    768,155.38x = 1,060,053.60 × 428,623.66
  4. Step 4: Simplify right side
    768,155.38x = 454,364,053,828.18
  5. Step 5: Solve for x
    x = 454,364,053,828.18/768,155.38
  6. Step 6: Final answer
    x = 591,500.19

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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.