Home / 722,209.40-1,083,314.10-512,257.40

Finding the Fourth Proportional to 722,209.40, 1,083,314.10 and 512,257.40

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Solution

The fourth proportional to 722,209.40, 1,083,314.10 and 512,257.40 is: 768,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,209.40 : 1,083,314.10 = 512,257.40 : x
  2. Step 2: Convert to fraction form
    722,209.40/1,083,314.10 = 512,257.40/x
  3. Step 3: Cross multiply
    722,209.40x = 1,083,314.10 × 512,257.40
  4. Step 4: Simplify right side
    722,209.40x = 554,935,664,249.34
  5. Step 5: Solve for x
    x = 554,935,664,249.34/722,209.40
  6. Step 6: Final answer
    x = 768,386.10

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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.