Home / 818,710.10-1,228,502.55-369,500.30

Finding the Fourth Proportional to 818,710.10, 1,228,502.55 and 369,500.30

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Solution

The fourth proportional to 818,710.10, 1,228,502.55 and 369,500.30 is: 554,447.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,710.10 : 1,228,502.55 = 369,500.30 : x
  2. Step 2: Convert to fraction form
    818,710.10/1,228,502.55 = 369,500.30/x
  3. Step 3: Cross multiply
    818,710.10x = 1,228,502.55 × 369,500.30
  4. Step 4: Simplify right side
    818,710.10x = 453,932,060,775.77
  5. Step 5: Solve for x
    x = 453,932,060,775.77/818,710.10
  6. Step 6: Final answer
    x = 554,447.86

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Double scale
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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.