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Finding the Fourth Proportional to 675,422.02, 931,991.08 and 385,071.04

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Solution

The fourth proportional to 675,422.02, 931,991.08 and 385,071.04 is: 531,345.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,422.02 : 931,991.08 = 385,071.04 : x
  2. Step 2: Convert to fraction form
    675,422.02/931,991.08 = 385,071.04/x
  3. Step 3: Cross multiply
    675,422.02x = 931,991.08 × 385,071.04
  4. Step 4: Simplify right side
    675,422.02x = 358,882,774,446.32
  5. Step 5: Solve for x
    x = 358,882,774,446.32/675,422.02
  6. Step 6: Final answer
    x = 531,345.98

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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.