Home / 728,085.60-1,092,128.40-575,870.40

Finding the Fourth Proportional to 728,085.60, 1,092,128.40 and 575,870.40

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Solution

The fourth proportional to 728,085.60, 1,092,128.40 and 575,870.40 is: 863,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,085.60 : 1,092,128.40 = 575,870.40 : x
  2. Step 2: Convert to fraction form
    728,085.60/1,092,128.40 = 575,870.40/x
  3. Step 3: Cross multiply
    728,085.60x = 1,092,128.40 × 575,870.40
  4. Step 4: Simplify right side
    728,085.60x = 628,924,418,559.36
  5. Step 5: Solve for x
    x = 628,924,418,559.36/728,085.60
  6. Step 6: Final answer
    x = 863,805.60

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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.