Home / 851,279.40-1,276,335.90-402,215.40

Finding the Fourth Proportional to 851,279.40, 1,276,335.90 and 402,215.40

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Solution

The fourth proportional to 851,279.40, 1,276,335.90 and 402,215.40 is: 603,047.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,279.40 : 1,276,335.90 = 402,215.40 : x
  2. Step 2: Convert to fraction form
    851,279.40/1,276,335.90 = 402,215.40/x
  3. Step 3: Cross multiply
    851,279.40x = 1,276,335.90 × 402,215.40
  4. Step 4: Simplify right side
    851,279.40x = 513,361,954,552.86
  5. Step 5: Solve for x
    x = 513,361,954,552.86/851,279.40
  6. Step 6: Final answer
    x = 603,047.55

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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.