Home / 910,410.30-1,365,615.45-279,323.10

Finding the Fourth Proportional to 910,410.30, 1,365,615.45 and 279,323.10

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Solution

The fourth proportional to 910,410.30, 1,365,615.45 and 279,323.10 is: 418,984.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,410.30 : 1,365,615.45 = 279,323.10 : x
  2. Step 2: Convert to fraction form
    910,410.30/1,365,615.45 = 279,323.10/x
  3. Step 3: Cross multiply
    910,410.30x = 1,365,615.45 × 279,323.10
  4. Step 4: Simplify right side
    910,410.30x = 381,447,940,901.90
  5. Step 5: Solve for x
    x = 381,447,940,901.90/910,410.30
  6. Step 6: Final answer
    x = 418,984.65

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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.