Home / 910,316.40-1,365,474.60-279,148.20

Finding the Fourth Proportional to 910,316.40, 1,365,474.60 and 279,148.20

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Solution

The fourth proportional to 910,316.40, 1,365,474.60 and 279,148.20 is: 418,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,316.40 : 1,365,474.60 = 279,148.20 : x
  2. Step 2: Convert to fraction form
    910,316.40/1,365,474.60 = 279,148.20/x
  3. Step 3: Cross multiply
    910,316.40x = 1,365,474.60 × 279,148.20
  4. Step 4: Simplify right side
    910,316.40x = 381,169,776,735.72
  5. Step 5: Solve for x
    x = 381,169,776,735.72/910,316.40
  6. Step 6: Final answer
    x = 418,722.30

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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.