Home / 429,941.70-591,964.29-390,083.61

Finding the Fourth Proportional to 429,941.70, 591,964.29 and 390,083.61

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Solution

The fourth proportional to 429,941.70, 591,964.29 and 390,083.61 is: 537,085.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,941.70 : 591,964.29 = 390,083.61 : x
  2. Step 2: Convert to fraction form
    429,941.70/591,964.29 = 390,083.61/x
  3. Step 3: Cross multiply
    429,941.70x = 591,964.29 × 390,083.61
  4. Step 4: Simplify right side
    429,941.70x = 230,915,567,234.29
  5. Step 5: Solve for x
    x = 230,915,567,234.29/429,941.70
  6. Step 6: Final answer
    x = 537,085.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.