Home / 1,189,314.10-1,783,971.15-390,621.70

Finding the Fourth Proportional to 1,189,314.10, 1,783,971.15 and 390,621.70

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Solution

The fourth proportional to 1,189,314.10, 1,783,971.15 and 390,621.70 is: 585,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,314.10 : 1,783,971.15 = 390,621.70 : x
  2. Step 2: Convert to fraction form
    1,189,314.10/1,783,971.15 = 390,621.70/x
  3. Step 3: Cross multiply
    1,189,314.10x = 1,783,971.15 × 390,621.70
  4. Step 4: Simplify right side
    1,189,314.10x = 696,857,843,363.96
  5. Step 5: Solve for x
    x = 696,857,843,363.96/1,189,314.10
  6. Step 6: Final answer
    x = 585,932.55

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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.