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Finding the Fourth Proportional to 642,657.11, 886,832.65 and 370,708.82

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Solution

The fourth proportional to 642,657.11, 886,832.65 and 370,708.82 is: 511,558.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,657.11 : 886,832.65 = 370,708.82 : x
  2. Step 2: Convert to fraction form
    642,657.11/886,832.65 = 370,708.82/x
  3. Step 3: Cross multiply
    642,657.11x = 886,832.65 × 370,708.82
  4. Step 4: Simplify right side
    642,657.11x = 328,756,684,573.82
  5. Step 5: Solve for x
    x = 328,756,684,573.82/642,657.11
  6. Step 6: Final answer
    x = 511,558.47

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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.