Home / 1,386,495.60-2,079,817.20-439,940.40

Finding the Fourth Proportional to 1,386,495.60, 2,079,817.20 and 439,940.40

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Solution

The fourth proportional to 1,386,495.60, 2,079,817.20 and 439,940.40 is: 659,934.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,495.60 : 2,079,817.20 = 439,940.40 : x
  2. Step 2: Convert to fraction form
    1,386,495.60/2,079,817.20 = 439,940.40/x
  3. Step 3: Cross multiply
    1,386,495.60x = 2,079,817.20 × 439,940.40
  4. Step 4: Simplify right side
    1,386,495.60x = 914,995,610,894.88
  5. Step 5: Solve for x
    x = 914,995,610,894.88/1,386,495.60
  6. Step 6: Final answer
    x = 659,934.02

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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.