Home / 850,621.20-1,275,931.80-765,000.15

Finding the Fourth Proportional to 850,621.20, 1,275,931.80 and 765,000.15

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Solution

The fourth proportional to 850,621.20, 1,275,931.80 and 765,000.15 is: 1,147,500.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,621.20 : 1,275,931.80 = 765,000.15 : x
  2. Step 2: Convert to fraction form
    850,621.20/1,275,931.80 = 765,000.15/x
  3. Step 3: Cross multiply
    850,621.20x = 1,275,931.80 × 765,000.15
  4. Step 4: Simplify right side
    850,621.20x = 976,088,018,389.77
  5. Step 5: Solve for x
    x = 976,088,018,389.77/850,621.20
  6. Step 6: Final answer
    x = 1,147,500.23

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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.