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Finding the Fourth Proportional to 500,591.94, 690,263.53 and 385,615.27

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Solution

The fourth proportional to 500,591.94, 690,263.53 and 385,615.27 is: 531,722.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,591.94 : 690,263.53 = 385,615.27 : x
  2. Step 2: Convert to fraction form
    500,591.94/690,263.53 = 385,615.27/x
  3. Step 3: Cross multiply
    500,591.94x = 690,263.53 × 385,615.27
  4. Step 4: Simplify right side
    500,591.94x = 266,176,157,492.10
  5. Step 5: Solve for x
    x = 266,176,157,492.10/500,591.94
  6. Step 6: Final answer
    x = 531,722.82

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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.