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Finding the Fourth Proportional to 621,967.13, 931,978.69 and 432,797.10

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Solution

The fourth proportional to 621,967.13, 931,978.69 and 432,797.10 is: 648,519.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,967.13 : 931,978.69 = 432,797.10 : x
  2. Step 2: Convert to fraction form
    621,967.13/931,978.69 = 432,797.10/x
  3. Step 3: Cross multiply
    621,967.13x = 931,978.69 × 432,797.10
  4. Step 4: Simplify right side
    621,967.13x = 403,357,674,293.80
  5. Step 5: Solve for x
    x = 403,357,674,293.80/621,967.13
  6. Step 6: Final answer
    x = 648,519.28

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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.