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Finding the Fourth Proportional to 703,439.64, 970,764.75 and 431,657.71

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Solution

The fourth proportional to 703,439.64, 970,764.75 and 431,657.71 is: 595,698.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,439.64 : 970,764.75 = 431,657.71 : x
  2. Step 2: Convert to fraction form
    703,439.64/970,764.75 = 431,657.71/x
  3. Step 3: Cross multiply
    703,439.64x = 970,764.75 × 431,657.71
  4. Step 4: Simplify right side
    703,439.64x = 419,038,086,506.81
  5. Step 5: Solve for x
    x = 419,038,086,506.81/703,439.64
  6. Step 6: Final answer
    x = 595,698.71

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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.