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Finding the Fourth Proportional to 480,700.49, 720,995.65 and 125,748.77

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Solution

The fourth proportional to 480,700.49, 720,995.65 and 125,748.77 is: 188,608.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,700.49 : 720,995.65 = 125,748.77 : x
  2. Step 2: Convert to fraction form
    480,700.49/720,995.65 = 125,748.77/x
  3. Step 3: Cross multiply
    480,700.49x = 720,995.65 × 125,748.77
  4. Step 4: Simplify right side
    480,700.49x = 90,664,312,243.50
  5. Step 5: Solve for x
    x = 90,664,312,243.50/480,700.49
  6. Step 6: Final answer
    x = 188,608.74

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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.