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Finding the Fourth Proportional to 652,087.10, 978,130.65 and 272,942.30

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Solution

The fourth proportional to 652,087.10, 978,130.65 and 272,942.30 is: 409,413.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,087.10 : 978,130.65 = 272,942.30 : x
  2. Step 2: Convert to fraction form
    652,087.10/978,130.65 = 272,942.30/x
  3. Step 3: Cross multiply
    652,087.10x = 978,130.65 × 272,942.30
  4. Step 4: Simplify right side
    652,087.10x = 266,973,229,311.50
  5. Step 5: Solve for x
    x = 266,973,229,311.50/652,087.10
  6. Step 6: Final answer
    x = 409,413.45

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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.