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Finding the Fourth Proportional to 703,155.80, 970,355.28 and 380,864.88

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Solution

The fourth proportional to 703,155.80, 970,355.28 and 380,864.88 is: 525,593.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,155.80 : 970,355.28 = 380,864.88 : x
  2. Step 2: Convert to fraction form
    703,155.80/970,355.28 = 380,864.88/x
  3. Step 3: Cross multiply
    703,155.80x = 970,355.28 × 380,864.88
  4. Step 4: Simplify right side
    703,155.80x = 369,574,247,274.57
  5. Step 5: Solve for x
    x = 369,574,247,274.57/703,155.80
  6. Step 6: Final answer
    x = 525,593.68

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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.