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Finding the Fourth Proportional to 1,300,582.80, 1,948,109.40 and 852,685.20

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Solution

The fourth proportional to 1,300,582.80, 1,948,109.40 and 852,685.20 is: 1,277,215.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300,582.80 : 1,948,109.40 = 852,685.20 : x
  2. Step 2: Convert to fraction form
    1,300,582.80/1,948,109.40 = 852,685.20/x
  3. Step 3: Cross multiply
    1,300,582.80x = 1,948,109.40 × 852,685.20
  4. Step 4: Simplify right side
    1,300,582.80x = 1,661,124,053,360.88
  5. Step 5: Solve for x
    x = 1,661,124,053,360.88/1,300,582.80
  6. Step 6: Final answer
    x = 1,277,215.15

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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.