Home / 818,280.50-1,227,464.49-257,358.74

Finding the Fourth Proportional to 818,280.50, 1,227,464.49 and 257,358.74

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Solution

The fourth proportional to 818,280.50, 1,227,464.49 and 257,358.74 is: 386,051.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,280.50 : 1,227,464.49 = 257,358.74 : x
  2. Step 2: Convert to fraction form
    818,280.50/1,227,464.49 = 257,358.74/x
  3. Step 3: Cross multiply
    818,280.50x = 1,227,464.49 × 257,358.74
  4. Step 4: Simplify right side
    818,280.50x = 315,898,714,541.14
  5. Step 5: Solve for x
    x = 315,898,714,541.14/818,280.50
  6. Step 6: Final answer
    x = 386,051.87

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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.