Home / 1,260,001.80-1,890,002.70-811,229.40

Finding the Fourth Proportional to 1,260,001.80, 1,890,002.70 and 811,229.40

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Solution

The fourth proportional to 1,260,001.80, 1,890,002.70 and 811,229.40 is: 1,216,844.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,001.80 : 1,890,002.70 = 811,229.40 : x
  2. Step 2: Convert to fraction form
    1,260,001.80/1,890,002.70 = 811,229.40/x
  3. Step 3: Cross multiply
    1,260,001.80x = 1,890,002.70 × 811,229.40
  4. Step 4: Simplify right side
    1,260,001.80x = 1,533,225,756,319.38
  5. Step 5: Solve for x
    x = 1,533,225,756,319.38/1,260,001.80
  6. Step 6: Final answer
    x = 1,216,844.10

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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.