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Finding the Fourth Proportional to 720,781.18, 994,513.06 and 430,336.33

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Solution

The fourth proportional to 720,781.18, 994,513.06 and 430,336.33 is: 593,765.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,781.18 : 994,513.06 = 430,336.33 : x
  2. Step 2: Convert to fraction form
    720,781.18/994,513.06 = 430,336.33/x
  3. Step 3: Cross multiply
    720,781.18x = 994,513.06 × 430,336.33
  4. Step 4: Simplify right side
    720,781.18x = 427,975,098,225.79
  5. Step 5: Solve for x
    x = 427,975,098,225.79/720,781.18
  6. Step 6: Final answer
    x = 593,765.64

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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.