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Finding the Fourth Proportional to 960,014.40, 1,440,021.60 and 625,780.80

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Solution

The fourth proportional to 960,014.40, 1,440,021.60 and 625,780.80 is: 938,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    960,014.40 : 1,440,021.60 = 625,780.80 : x
  2. Step 2: Convert to fraction form
    960,014.40/1,440,021.60 = 625,780.80/x
  3. Step 3: Cross multiply
    960,014.40x = 1,440,021.60 × 625,780.80
  4. Step 4: Simplify right side
    960,014.40x = 901,137,868,865.28
  5. Step 5: Solve for x
    x = 901,137,868,865.28/960,014.40
  6. Step 6: Final answer
    x = 938,671.20

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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.