Home / 918,720.70-1,378,265-514,487.77

Finding the Fourth Proportional to 918,720.70, 1,378,265 and 514,487.77

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Solution

The fourth proportional to 918,720.70, 1,378,265 and 514,487.77 is: 771,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,720.70 : 1,378,265 = 514,487.77 : x
  2. Step 2: Convert to fraction form
    918,720.70/1,378,265 = 514,487.77/x
  3. Step 3: Cross multiply
    918,720.70x = 1,378,265 × 514,487.77
  4. Step 4: Simplify right side
    918,720.70x = 709,100,486,319.05
  5. Step 5: Solve for x
    x = 709,100,486,319.05/918,720.70
  6. Step 6: Final answer
    x = 771,834.67

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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.