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Finding the Fourth Proportional to 1,353,907.02, 1,868,597.54 and 864,087.87

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Solution

The fourth proportional to 1,353,907.02, 1,868,597.54 and 864,087.87 is: 1,192,572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,907.02 : 1,868,597.54 = 864,087.87 : x
  2. Step 2: Convert to fraction form
    1,353,907.02/1,868,597.54 = 864,087.87/x
  3. Step 3: Cross multiply
    1,353,907.02x = 1,868,597.54 × 864,087.87
  4. Step 4: Simplify right side
    1,353,907.02x = 1,614,632,468,225.84
  5. Step 5: Solve for x
    x = 1,614,632,468,225.84/1,353,907.02
  6. Step 6: Final answer
    x = 1,192,572.64

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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.