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Finding the Fourth Proportional to 1,295,885.80, 1,943,828.70 and 824,660.20

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Solution

The fourth proportional to 1,295,885.80, 1,943,828.70 and 824,660.20 is: 1,236,990.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,885.80 : 1,943,828.70 = 824,660.20 : x
  2. Step 2: Convert to fraction form
    1,295,885.80/1,943,828.70 = 824,660.20/x
  3. Step 3: Cross multiply
    1,295,885.80x = 1,943,828.70 × 824,660.20
  4. Step 4: Simplify right side
    1,295,885.80x = 1,602,998,164,507.74
  5. Step 5: Solve for x
    x = 1,602,998,164,507.74/1,295,885.80
  6. Step 6: Final answer
    x = 1,236,990.30

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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.