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Finding the Fourth Proportional to 662,668.80, 994,003.20 and 579,724.80

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Solution

The fourth proportional to 662,668.80, 994,003.20 and 579,724.80 is: 869,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,668.80 : 994,003.20 = 579,724.80 : x
  2. Step 2: Convert to fraction form
    662,668.80/994,003.20 = 579,724.80/x
  3. Step 3: Cross multiply
    662,668.80x = 994,003.20 × 579,724.80
  4. Step 4: Simplify right side
    662,668.80x = 576,248,306,319.36
  5. Step 5: Solve for x
    x = 576,248,306,319.36/662,668.80
  6. Step 6: Final answer
    x = 869,587.20

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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.