Home / 1,212,078.60-1,818,117.90-876,155.40

Finding the Fourth Proportional to 1,212,078.60, 1,818,117.90 and 876,155.40

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Solution

The fourth proportional to 1,212,078.60, 1,818,117.90 and 876,155.40 is: 1,314,233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,078.60 : 1,818,117.90 = 876,155.40 : x
  2. Step 2: Convert to fraction form
    1,212,078.60/1,818,117.90 = 876,155.40/x
  3. Step 3: Cross multiply
    1,212,078.60x = 1,818,117.90 × 876,155.40
  4. Step 4: Simplify right side
    1,212,078.60x = 1,592,953,815,921.66
  5. Step 5: Solve for x
    x = 1,592,953,815,921.66/1,212,078.60
  6. Step 6: Final answer
    x = 1,314,233.10

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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.