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Finding the Fourth Proportional to 648,700, 895,099.20 and 362,174.08

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Solution

The fourth proportional to 648,700, 895,099.20 and 362,174.08 is: 499,740.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,700 : 895,099.20 = 362,174.08 : x
  2. Step 2: Convert to fraction form
    648,700/895,099.20 = 362,174.08/x
  3. Step 3: Cross multiply
    648,700x = 895,099.20 × 362,174.08
  4. Step 4: Simplify right side
    648,700x = 324,181,729,268.74
  5. Step 5: Solve for x
    x = 324,181,729,268.74/648,700
  6. Step 6: Final answer
    x = 499,740.60

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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.