Home / 780,712.40-1,172,818.20-748,830.80

Finding the Fourth Proportional to 780,712.40, 1,172,818.20 and 748,830.80

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Solution

The fourth proportional to 780,712.40, 1,172,818.20 and 748,830.80 is: 1,124,924.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,712.40 : 1,172,818.20 = 748,830.80 : x
  2. Step 2: Convert to fraction form
    780,712.40/1,172,818.20 = 748,830.80/x
  3. Step 3: Cross multiply
    780,712.40x = 1,172,818.20 × 748,830.80
  4. Step 4: Simplify right side
    780,712.40x = 878,242,390,960.56
  5. Step 5: Solve for x
    x = 878,242,390,960.56/780,712.40
  6. Step 6: Final answer
    x = 1,124,924.35

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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.