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Finding the Fourth Proportional to 497,379.48, 686,084.34 and 303,698.76

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Solution

The fourth proportional to 497,379.48, 686,084.34 and 303,698.76 is: 418,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,379.48 : 686,084.34 = 303,698.76 : x
  2. Step 2: Convert to fraction form
    497,379.48/686,084.34 = 303,698.76/x
  3. Step 3: Cross multiply
    497,379.48x = 686,084.34 × 303,698.76
  4. Step 4: Simplify right side
    497,379.48x = 208,362,963,313.42
  5. Step 5: Solve for x
    x = 208,362,963,313.42/497,379.48
  6. Step 6: Final answer
    x = 418,921.51

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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.