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Finding the Fourth Proportional to 702,806.59, 969,868.65 and 380,515.69

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Solution

The fourth proportional to 702,806.59, 969,868.65 and 380,515.69 is: 525,109.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,806.59 : 969,868.65 = 380,515.69 : x
  2. Step 2: Convert to fraction form
    702,806.59/969,868.65 = 380,515.69/x
  3. Step 3: Cross multiply
    702,806.59x = 969,868.65 × 380,515.69
  4. Step 4: Simplify right side
    702,806.59x = 369,050,238,564.12
  5. Step 5: Solve for x
    x = 369,050,238,564.12/702,806.59
  6. Step 6: Final answer
    x = 525,109.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.