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Finding the Fourth Proportional to 642,063.86, 886,057.42 and 370,126.82

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Solution

The fourth proportional to 642,063.86, 886,057.42 and 370,126.82 is: 510,780.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,063.86 : 886,057.42 = 370,126.82 : x
  2. Step 2: Convert to fraction form
    642,063.86/886,057.42 = 370,126.82/x
  3. Step 3: Cross multiply
    642,063.86x = 886,057.42 × 370,126.82
  4. Step 4: Simplify right side
    642,063.86x = 327,953,615,202.00
  5. Step 5: Solve for x
    x = 327,953,615,202.00/642,063.86
  6. Step 6: Final answer
    x = 510,780.37

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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.