Home / 1,238,442.20-1,855,913.70-916,078.40

Finding the Fourth Proportional to 1,238,442.20, 1,855,913.70 and 916,078.40

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Solution

The fourth proportional to 1,238,442.20, 1,855,913.70 and 916,078.40 is: 1,372,823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,442.20 : 1,855,913.70 = 916,078.40 : x
  2. Step 2: Convert to fraction form
    1,238,442.20/1,855,913.70 = 916,078.40/x
  3. Step 3: Cross multiply
    1,238,442.20x = 1,855,913.70 × 916,078.40
  4. Step 4: Simplify right side
    1,238,442.20x = 1,700,162,452,834.08
  5. Step 5: Solve for x
    x = 1,700,162,452,834.08/1,238,442.20
  6. Step 6: Final answer
    x = 1,372,823.42

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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.