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Finding the Fourth Proportional to 778,843.80, 1,168,265.70 and 424,549.80

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Solution

The fourth proportional to 778,843.80, 1,168,265.70 and 424,549.80 is: 636,824.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,843.80 : 1,168,265.70 = 424,549.80 : x
  2. Step 2: Convert to fraction form
    778,843.80/1,168,265.70 = 424,549.80/x
  3. Step 3: Cross multiply
    778,843.80x = 1,168,265.70 × 424,549.80
  4. Step 4: Simplify right side
    778,843.80x = 495,986,969,281.86
  5. Step 5: Solve for x
    x = 495,986,969,281.86/778,843.80
  6. Step 6: Final answer
    x = 636,824.70

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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.