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Finding the Fourth Proportional to 659,317.68, 989,783.88 and 434,865.84

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Solution

The fourth proportional to 659,317.68, 989,783.88 and 434,865.84 is: 652,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,317.68 : 989,783.88 = 434,865.84 : x
  2. Step 2: Convert to fraction form
    659,317.68/989,783.88 = 434,865.84/x
  3. Step 3: Cross multiply
    659,317.68x = 989,783.88 × 434,865.84
  4. Step 4: Simplify right side
    659,317.68x = 430,423,198,394.66
  5. Step 5: Solve for x
    x = 430,423,198,394.66/659,317.68
  6. Step 6: Final answer
    x = 652,831.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.