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Finding the Fourth Proportional to 702,909.80, 970,014.17 and 380,620.85

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Solution

The fourth proportional to 702,909.80, 970,014.17 and 380,620.85 is: 525,256.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,909.80 : 970,014.17 = 380,620.85 : x
  2. Step 2: Convert to fraction form
    702,909.80/970,014.17 = 380,620.85/x
  3. Step 3: Cross multiply
    702,909.80x = 970,014.17 × 380,620.85
  4. Step 4: Simplify right side
    702,909.80x = 369,207,615,994.34
  5. Step 5: Solve for x
    x = 369,207,615,994.34/702,909.80
  6. Step 6: Final answer
    x = 525,256.04

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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.