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Finding the Fourth Proportional to 571,972.80, 858,650.40 and 319,454.40

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Solution

The fourth proportional to 571,972.80, 858,650.40 and 319,454.40 is: 479,567.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,972.80 : 858,650.40 = 319,454.40 : x
  2. Step 2: Convert to fraction form
    571,972.80/858,650.40 = 319,454.40/x
  3. Step 3: Cross multiply
    571,972.80x = 858,650.40 × 319,454.40
  4. Step 4: Simplify right side
    571,972.80x = 274,299,648,341.76
  5. Step 5: Solve for x
    x = 274,299,648,341.76/571,972.80
  6. Step 6: Final answer
    x = 479,567.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.