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Finding the Fourth Proportional to 702,913.80, 970,019.68 and 380,624.85

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Solution

The fourth proportional to 702,913.80, 970,019.68 and 380,624.85 is: 525,261.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,913.80 : 970,019.68 = 380,624.85 : x
  2. Step 2: Convert to fraction form
    702,913.80/970,019.68 = 380,624.85/x
  3. Step 3: Cross multiply
    702,913.80x = 970,019.68 × 380,624.85
  4. Step 4: Simplify right side
    702,913.80x = 369,213,595,197.05
  5. Step 5: Solve for x
    x = 369,213,595,197.05/702,913.80
  6. Step 6: Final answer
    x = 525,261.55

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1.5x scale

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.