Home / 674,817.60-1,012,226.40-643,713.60

Finding the Fourth Proportional to 674,817.60, 1,012,226.40 and 643,713.60

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Solution

The fourth proportional to 674,817.60, 1,012,226.40 and 643,713.60 is: 965,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,817.60 : 1,012,226.40 = 643,713.60 : x
  2. Step 2: Convert to fraction form
    674,817.60/1,012,226.40 = 643,713.60/x
  3. Step 3: Cross multiply
    674,817.60x = 1,012,226.40 × 643,713.60
  4. Step 4: Simplify right side
    674,817.60x = 651,583,899,959.04
  5. Step 5: Solve for x
    x = 651,583,899,959.04/674,817.60
  6. Step 6: Final answer
    x = 965,570.40

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Half scale
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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.