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Finding the Fourth Proportional to 432,965.40, 648,135.90 and 314,867.40

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Solution

The fourth proportional to 432,965.40, 648,135.90 and 314,867.40 is: 471,346.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,965.40 : 648,135.90 = 314,867.40 : x
  2. Step 2: Convert to fraction form
    432,965.40/648,135.90 = 314,867.40/x
  3. Step 3: Cross multiply
    432,965.40x = 648,135.90 × 314,867.40
  4. Step 4: Simplify right side
    432,965.40x = 204,076,865,679.66
  5. Step 5: Solve for x
    x = 204,076,865,679.66/432,965.40
  6. Step 6: Final answer
    x = 471,346.82

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1.5x scale

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.