Home / 790,510.40-1,186,543.20-391,601.60

Finding the Fourth Proportional to 790,510.40, 1,186,543.20 and 391,601.60

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Solution

The fourth proportional to 790,510.40, 1,186,543.20 and 391,601.60 is: 587,787.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,510.40 : 1,186,543.20 = 391,601.60 : x
  2. Step 2: Convert to fraction form
    790,510.40/1,186,543.20 = 391,601.60/x
  3. Step 3: Cross multiply
    790,510.40x = 1,186,543.20 × 391,601.60
  4. Step 4: Simplify right side
    790,510.40x = 464,652,215,589.12
  5. Step 5: Solve for x
    x = 464,652,215,589.12/790,510.40
  6. Step 6: Final answer
    x = 587,787.61

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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.