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Finding the Fourth Proportional to 1,148,868.90, 1,584,406.98 and 719,188.20

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Solution

The fourth proportional to 1,148,868.90, 1,584,406.98 and 719,188.20 is: 991,833.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148,868.90 : 1,584,406.98 = 719,188.20 : x
  2. Step 2: Convert to fraction form
    1,148,868.90/1,584,406.98 = 719,188.20/x
  3. Step 3: Cross multiply
    1,148,868.90x = 1,584,406.98 × 719,188.20
  4. Step 4: Simplify right side
    1,148,868.90x = 1,139,486,804,013.64
  5. Step 5: Solve for x
    x = 1,139,486,804,013.64/1,148,868.90
  6. Step 6: Final answer
    x = 991,833.62

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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.