Home / 619,815.80-928,557.30-319,273.40

Finding the Fourth Proportional to 619,815.80, 928,557.30 and 319,273.40

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Solution

The fourth proportional to 619,815.80, 928,557.30 and 319,273.40 is: 478,309.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,815.80 : 928,557.30 = 319,273.40 : x
  2. Step 2: Convert to fraction form
    619,815.80/928,557.30 = 319,273.40/x
  3. Step 3: Cross multiply
    619,815.80x = 928,557.30 × 319,273.40
  4. Step 4: Simplify right side
    619,815.80x = 296,463,646,265.82
  5. Step 5: Solve for x
    x = 296,463,646,265.82/619,815.80
  6. Step 6: Final answer
    x = 478,309.28

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1.5x scale

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.