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Finding the Fourth Proportional to 803,605.80, 1,205,408.70 and 242,567.40

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Solution

The fourth proportional to 803,605.80, 1,205,408.70 and 242,567.40 is: 363,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,605.80 : 1,205,408.70 = 242,567.40 : x
  2. Step 2: Convert to fraction form
    803,605.80/1,205,408.70 = 242,567.40/x
  3. Step 3: Cross multiply
    803,605.80x = 1,205,408.70 × 242,567.40
  4. Step 4: Simplify right side
    803,605.80x = 292,392,854,296.38
  5. Step 5: Solve for x
    x = 292,392,854,296.38/803,605.80
  6. Step 6: Final answer
    x = 363,851.10

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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.