Home / 661,780.61-992,577.20-212,442.32

Finding the Fourth Proportional to 661,780.61, 992,577.20 and 212,442.32

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Solution

The fourth proportional to 661,780.61, 992,577.20 and 212,442.32 is: 318,633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,780.61 : 992,577.20 = 212,442.32 : x
  2. Step 2: Convert to fraction form
    661,780.61/992,577.20 = 212,442.32/x
  3. Step 3: Cross multiply
    661,780.61x = 992,577.20 × 212,442.32
  4. Step 4: Simplify right side
    661,780.61x = 210,865,402,084.89
  5. Step 5: Solve for x
    x = 210,865,402,084.89/661,780.61
  6. Step 6: Final answer
    x = 318,633.39

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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.