Home / 821,725.85-1,134,708.80-512,156.76

Finding the Fourth Proportional to 821,725.85, 1,134,708.80 and 512,156.76

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Solution

The fourth proportional to 821,725.85, 1,134,708.80 and 512,156.76 is: 707,229.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,725.85 : 1,134,708.80 = 512,156.76 : x
  2. Step 2: Convert to fraction form
    821,725.85/1,134,708.80 = 512,156.76/x
  3. Step 3: Cross multiply
    821,725.85x = 1,134,708.80 × 512,156.76
  4. Step 4: Simplify right side
    821,725.85x = 581,148,779,990.70
  5. Step 5: Solve for x
    x = 581,148,779,990.70/821,725.85
  6. Step 6: Final answer
    x = 707,229.53

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Double scale
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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.