Home / 1,189,822.50-1,784,063.05-390,889.53

Finding the Fourth Proportional to 1,189,822.50, 1,784,063.05 and 390,889.53

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Solution

The fourth proportional to 1,189,822.50, 1,784,063.05 and 390,889.53 is: 586,113.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,822.50 : 1,784,063.05 = 390,889.53 : x
  2. Step 2: Convert to fraction form
    1,189,822.50/1,784,063.05 = 390,889.53/x
  3. Step 3: Cross multiply
    1,189,822.50x = 1,784,063.05 × 390,889.53
  4. Step 4: Simplify right side
    1,189,822.50x = 697,371,567,104.87
  5. Step 5: Solve for x
    x = 697,371,567,104.87/1,189,822.50
  6. Step 6: Final answer
    x = 586,113.95

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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.