Home / 918,645.71-1,267,729.79-510,734.57

Finding the Fourth Proportional to 918,645.71, 1,267,729.79 and 510,734.57

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Solution

The fourth proportional to 918,645.71, 1,267,729.79 and 510,734.57 is: 704,812.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,645.71 : 1,267,729.79 = 510,734.57 : x
  2. Step 2: Convert to fraction form
    918,645.71/1,267,729.79 = 510,734.57/x
  3. Step 3: Cross multiply
    918,645.71x = 1,267,729.79 × 510,734.57
  4. Step 4: Simplify right side
    918,645.71x = 647,473,420,279.52
  5. Step 5: Solve for x
    x = 647,473,420,279.52/918,645.71
  6. Step 6: Final answer
    x = 704,812.98

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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.