Home / 887,255.40-1,330,883.10-438,045.60

Finding the Fourth Proportional to 887,255.40, 1,330,883.10 and 438,045.60

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Solution

The fourth proportional to 887,255.40, 1,330,883.10 and 438,045.60 is: 657,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,255.40 : 1,330,883.10 = 438,045.60 : x
  2. Step 2: Convert to fraction form
    887,255.40/1,330,883.10 = 438,045.60/x
  3. Step 3: Cross multiply
    887,255.40x = 1,330,883.10 × 438,045.60
  4. Step 4: Simplify right side
    887,255.40x = 582,987,486,069.36
  5. Step 5: Solve for x
    x = 582,987,486,069.36/887,255.40
  6. Step 6: Final answer
    x = 657,068.40

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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.