Home / 1,390,478.20-2,085,911.70-591,753.40

Finding the Fourth Proportional to 1,390,478.20, 2,085,911.70 and 591,753.40

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Solution

The fourth proportional to 1,390,478.20, 2,085,911.70 and 591,753.40 is: 887,712.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,478.20 : 2,085,911.70 = 591,753.40 : x
  2. Step 2: Convert to fraction form
    1,390,478.20/2,085,911.70 = 591,753.40/x
  3. Step 3: Cross multiply
    1,390,478.20x = 2,085,911.70 × 591,753.40
  4. Step 4: Simplify right side
    1,390,478.20x = 1,234,345,340,574.78
  5. Step 5: Solve for x
    x = 1,234,345,340,574.78/1,390,478.20
  6. Step 6: Final answer
    x = 887,712.83

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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.