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Finding the Fourth Proportional to 500,294.70, 690,393.98 and 279,533.79

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Solution

The fourth proportional to 500,294.70, 690,393.98 and 279,533.79 is: 385,749.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,294.70 : 690,393.98 = 279,533.79 : x
  2. Step 2: Convert to fraction form
    500,294.70/690,393.98 = 279,533.79/x
  3. Step 3: Cross multiply
    500,294.70x = 690,393.98 × 279,533.79
  4. Step 4: Simplify right side
    500,294.70x = 192,988,444,424.92
  5. Step 5: Solve for x
    x = 192,988,444,424.92/500,294.70
  6. Step 6: Final answer
    x = 385,749.53

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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.