Home / 780,612.42-1,170,121.02-442,939.74

Finding the Fourth Proportional to 780,612.42, 1,170,121.02 and 442,939.74

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Solution

The fourth proportional to 780,612.42, 1,170,121.02 and 442,939.74 is: 663,957.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,612.42 : 1,170,121.02 = 442,939.74 : x
  2. Step 2: Convert to fraction form
    780,612.42/1,170,121.02 = 442,939.74/x
  3. Step 3: Cross multiply
    780,612.42x = 1,170,121.02 × 442,939.74
  4. Step 4: Simplify right side
    780,612.42x = 518,293,100,367.34
  5. Step 5: Solve for x
    x = 518,293,100,367.34/780,612.42
  6. Step 6: Final answer
    x = 663,957.03

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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.