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Finding the Fourth Proportional to 557,211.61, 768,945.31 and 302,564.62

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Solution

The fourth proportional to 557,211.61, 768,945.31 and 302,564.62 is: 417,535.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,211.61 : 768,945.31 = 302,564.62 : x
  2. Step 2: Convert to fraction form
    557,211.61/768,945.31 = 302,564.62/x
  3. Step 3: Cross multiply
    557,211.61x = 768,945.31 × 302,564.62
  4. Step 4: Simplify right side
    557,211.61x = 232,655,645,520.93
  5. Step 5: Solve for x
    x = 232,655,645,520.93/557,211.61
  6. Step 6: Final answer
    x = 417,535.53

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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.