Home / 890,680.50-1,229,139.09-488,272.50

Finding the Fourth Proportional to 890,680.50, 1,229,139.09 and 488,272.50

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Solution

The fourth proportional to 890,680.50, 1,229,139.09 and 488,272.50 is: 673,816.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,680.50 : 1,229,139.09 = 488,272.50 : x
  2. Step 2: Convert to fraction form
    890,680.50/1,229,139.09 = 488,272.50/x
  3. Step 3: Cross multiply
    890,680.50x = 1,229,139.09 × 488,272.50
  4. Step 4: Simplify right side
    890,680.50x = 600,154,816,322.03
  5. Step 5: Solve for x
    x = 600,154,816,322.03/890,680.50
  6. Step 6: Final answer
    x = 673,816.05

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1.5x scale

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.