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Finding the Fourth Proportional to 500,342.71, 690,190.99 and 316,524.35

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Solution

The fourth proportional to 500,342.71, 690,190.99 and 316,524.35 is: 436,625.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,342.71 : 690,190.99 = 316,524.35 : x
  2. Step 2: Convert to fraction form
    500,342.71/690,190.99 = 316,524.35/x
  3. Step 3: Cross multiply
    500,342.71x = 690,190.99 × 316,524.35
  4. Step 4: Simplify right side
    500,342.71x = 218,462,254,485.61
  5. Step 5: Solve for x
    x = 218,462,254,485.61/500,342.71
  6. Step 6: Final answer
    x = 436,625.24

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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.