Home / 817,521,801.85-1,226,223,385.62-319,438,661.43

Finding the Fourth Proportional to 817,521,801.85, 1,226,223,385.62 and 319,438,661.43

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Solution

The fourth proportional to 817,521,801.85, 1,226,223,385.62 and 319,438,661.43 is: 479,134,814.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,521,801.85 : 1,226,223,385.62 = 319,438,661.43 : x
  2. Step 2: Convert to fraction form
    817,521,801.85/1,226,223,385.62 = 319,438,661.43/x
  3. Step 3: Cross multiply
    817,521,801.85x = 1,226,223,385.62 × 319,438,661.43
  4. Step 4: Simplify right side
    817,521,801.85x = 391,703,156,913,140,544
  5. Step 5: Solve for x
    x = 391,703,156,913,140,544/817,521,801.85
  6. Step 6: Final answer
    x = 479,134,814.54

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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.