Home / 728,880.40-1,093,320.60-542,256.40

Finding the Fourth Proportional to 728,880.40, 1,093,320.60 and 542,256.40

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Solution

The fourth proportional to 728,880.40, 1,093,320.60 and 542,256.40 is: 813,384.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,880.40 : 1,093,320.60 = 542,256.40 : x
  2. Step 2: Convert to fraction form
    728,880.40/1,093,320.60 = 542,256.40/x
  3. Step 3: Cross multiply
    728,880.40x = 1,093,320.60 × 542,256.40
  4. Step 4: Simplify right side
    728,880.40x = 592,860,092,601.84
  5. Step 5: Solve for x
    x = 592,860,092,601.84/728,880.40
  6. Step 6: Final answer
    x = 813,384.60

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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.