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Finding the Fourth Proportional to 642,061.86, 886,054.66 and 370,124.82

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Solution

The fourth proportional to 642,061.86, 886,054.66 and 370,124.82 is: 510,777.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,061.86 : 886,054.66 = 370,124.82 : x
  2. Step 2: Convert to fraction form
    642,061.86/886,054.66 = 370,124.82/x
  3. Step 3: Cross multiply
    642,061.86x = 886,054.66 × 370,124.82
  4. Step 4: Simplify right side
    642,061.86x = 327,950,821,542.66
  5. Step 5: Solve for x
    x = 327,950,821,542.66/642,061.86
  6. Step 6: Final answer
    x = 510,777.61

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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.