Home / 1,238,479.20-1,855,969.20-916,115.40

Finding the Fourth Proportional to 1,238,479.20, 1,855,969.20 and 916,115.40

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Solution

The fourth proportional to 1,238,479.20, 1,855,969.20 and 916,115.40 is: 1,372,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,479.20 : 1,855,969.20 = 916,115.40 : x
  2. Step 2: Convert to fraction form
    1,238,479.20/1,855,969.20 = 916,115.40/x
  3. Step 3: Cross multiply
    1,238,479.20x = 1,855,969.20 × 916,115.40
  4. Step 4: Simplify right side
    1,238,479.20x = 1,700,281,966,045.68
  5. Step 5: Solve for x
    x = 1,700,281,966,045.68/1,238,479.20
  6. Step 6: Final answer
    x = 1,372,878.90

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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.