Home / 1,210,459.40-1,815,689.10-785,306.60

Finding the Fourth Proportional to 1,210,459.40, 1,815,689.10 and 785,306.60

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Solution

The fourth proportional to 1,210,459.40, 1,815,689.10 and 785,306.60 is: 1,177,959.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,459.40 : 1,815,689.10 = 785,306.60 : x
  2. Step 2: Convert to fraction form
    1,210,459.40/1,815,689.10 = 785,306.60/x
  3. Step 3: Cross multiply
    1,210,459.40x = 1,815,689.10 × 785,306.60
  4. Step 4: Simplify right side
    1,210,459.40x = 1,425,872,633,778.06
  5. Step 5: Solve for x
    x = 1,425,872,633,778.06/1,210,459.40
  6. Step 6: Final answer
    x = 1,177,959.90

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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.