Home / 860,721.22-1,290,607.82-355,167.28

Finding the Fourth Proportional to 860,721.22, 1,290,607.82 and 355,167.28

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Solution

The fourth proportional to 860,721.22, 1,290,607.82 and 355,167.28 is: 532,555.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,721.22 : 1,290,607.82 = 355,167.28 : x
  2. Step 2: Convert to fraction form
    860,721.22/1,290,607.82 = 355,167.28/x
  3. Step 3: Cross multiply
    860,721.22x = 1,290,607.82 × 355,167.28
  4. Step 4: Simplify right side
    860,721.22x = 458,381,668,976.13
  5. Step 5: Solve for x
    x = 458,381,668,976.13/860,721.22
  6. Step 6: Final answer
    x = 532,555.32

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1.5x scale

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.