Home / 722,255.40-1,085,715.90-513,340.20

Finding the Fourth Proportional to 722,255.40, 1,085,715.90 and 513,340.20

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Solution

The fourth proportional to 722,255.40, 1,085,715.90 and 513,340.20 is: 771,668.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,255.40 : 1,085,715.90 = 513,340.20 : x
  2. Step 2: Convert to fraction form
    722,255.40/1,085,715.90 = 513,340.20/x
  3. Step 3: Cross multiply
    722,255.40x = 1,085,715.90 × 513,340.20
  4. Step 4: Simplify right side
    722,255.40x = 557,341,617,249.18
  5. Step 5: Solve for x
    x = 557,341,617,249.18/722,255.40
  6. Step 6: Final answer
    x = 771,668.33

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Half scale
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Double scale
Find fourth proportional to 722,256.40, 1,085,717.40 and 513,341.20
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.