Home / 642,455.22-886,564.29-370,534.50

Finding the Fourth Proportional to 642,455.22, 886,564.29 and 370,534.50

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Solution

The fourth proportional to 642,455.22, 886,564.29 and 370,534.50 is: 511,323.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,455.22 : 886,564.29 = 370,534.50 : x
  2. Step 2: Convert to fraction form
    642,455.22/886,564.29 = 370,534.50/x
  3. Step 3: Cross multiply
    642,455.22x = 886,564.29 × 370,534.50
  4. Step 4: Simplify right side
    642,455.22x = 328,502,655,913.01
  5. Step 5: Solve for x
    x = 328,502,655,913.01/642,455.22
  6. Step 6: Final answer
    x = 511,323.82

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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.