Home / 779,363.60-1,169,045.40-639,280.40

Finding the Fourth Proportional to 779,363.60, 1,169,045.40 and 639,280.40

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Solution

The fourth proportional to 779,363.60, 1,169,045.40 and 639,280.40 is: 958,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,363.60 : 1,169,045.40 = 639,280.40 : x
  2. Step 2: Convert to fraction form
    779,363.60/1,169,045.40 = 639,280.40/x
  3. Step 3: Cross multiply
    779,363.60x = 1,169,045.40 × 639,280.40
  4. Step 4: Simplify right side
    779,363.60x = 747,347,810,930.16
  5. Step 5: Solve for x
    x = 747,347,810,930.16/779,363.60
  6. Step 6: Final answer
    x = 958,920.60

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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.