Home / 1,290,365.98-1,935,423.88-391,815.61

Finding the Fourth Proportional to 1,290,365.98, 1,935,423.88 and 391,815.61

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Solution

The fourth proportional to 1,290,365.98, 1,935,423.88 and 391,815.61 is: 587,685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,365.98 : 1,935,423.88 = 391,815.61 : x
  2. Step 2: Convert to fraction form
    1,290,365.98/1,935,423.88 = 391,815.61/x
  3. Step 3: Cross multiply
    1,290,365.98x = 1,935,423.88 × 391,815.61
  4. Step 4: Simplify right side
    1,290,365.98x = 758,329,282,332.67
  5. Step 5: Solve for x
    x = 758,329,282,332.67/1,290,365.98
  6. Step 6: Final answer
    x = 587,685.43

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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.