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Finding the Fourth Proportional to 3,118,854.40, 4,679,836.80 and 1,772,051.20

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Solution

The fourth proportional to 3,118,854.40, 4,679,836.80 and 1,772,051.20 is: 2,658,960.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118,854.40 : 4,679,836.80 = 1,772,051.20 : x
  2. Step 2: Convert to fraction form
    3,118,854.40/4,679,836.80 = 1,772,051.20/x
  3. Step 3: Cross multiply
    3,118,854.40x = 4,679,836.80 × 1,772,051.20
  4. Step 4: Simplify right side
    3,118,854.40x = 8,292,910,417,244.16
  5. Step 5: Solve for x
    x = 8,292,910,417,244.16/3,118,854.40
  6. Step 6: Final answer
    x = 2,658,960.42

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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.