Home / 817,900.90-1,226,851.35-256,992.10

Finding the Fourth Proportional to 817,900.90, 1,226,851.35 and 256,992.10

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Solution

The fourth proportional to 817,900.90, 1,226,851.35 and 256,992.10 is: 385,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,900.90 : 1,226,851.35 = 256,992.10 : x
  2. Step 2: Convert to fraction form
    817,900.90/1,226,851.35 = 256,992.10/x
  3. Step 3: Cross multiply
    817,900.90x = 1,226,851.35 × 256,992.10
  4. Step 4: Simplify right side
    817,900.90x = 315,291,104,824.34
  5. Step 5: Solve for x
    x = 315,291,104,824.34/817,900.90
  6. Step 6: Final answer
    x = 385,488.15

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Double scale
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Similar ratio
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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.