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Finding the Fourth Proportional to 396,001.80, 555,802.20 and 396,001.80

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Solution

The fourth proportional to 396,001.80, 555,802.20 and 396,001.80 is: 555,802.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,001.80 : 555,802.20 = 396,001.80 : x
  2. Step 2: Convert to fraction form
    396,001.80/555,802.20 = 396,001.80/x
  3. Step 3: Cross multiply
    396,001.80x = 555,802.20 × 396,001.80
  4. Step 4: Simplify right side
    396,001.80x = 220,098,671,643.96
  5. Step 5: Solve for x
    x = 220,098,671,643.96/396,001.80
  6. Step 6: Final answer
    x = 555,802.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.