Home / 918,720.75-1,378,265.07-514,487.82

Finding the Fourth Proportional to 918,720.75, 1,378,265.07 and 514,487.82

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Solution

The fourth proportional to 918,720.75, 1,378,265.07 and 514,487.82 is: 771,834.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,720.75 : 1,378,265.07 = 514,487.82 : x
  2. Step 2: Convert to fraction form
    918,720.75/1,378,265.07 = 514,487.82/x
  3. Step 3: Cross multiply
    918,720.75x = 1,378,265.07 × 514,487.82
  4. Step 4: Simplify right side
    918,720.75x = 709,100,591,246.45
  5. Step 5: Solve for x
    x = 709,100,591,246.45/918,720.75
  6. Step 6: Final answer
    x = 771,834.74

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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.