Home / 883,411.60-1,325,117.40-485,280.40

Finding the Fourth Proportional to 883,411.60, 1,325,117.40 and 485,280.40

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Solution

The fourth proportional to 883,411.60, 1,325,117.40 and 485,280.40 is: 727,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,411.60 : 1,325,117.40 = 485,280.40 : x
  2. Step 2: Convert to fraction form
    883,411.60/1,325,117.40 = 485,280.40/x
  3. Step 3: Cross multiply
    883,411.60x = 1,325,117.40 × 485,280.40
  4. Step 4: Simplify right side
    883,411.60x = 643,053,501,918.96
  5. Step 5: Solve for x
    x = 643,053,501,918.96/883,411.60
  6. Step 6: Final answer
    x = 727,920.60

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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.