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Finding the Fourth Proportional to 869,152.90, 1,217,643.50 and 869,152.90

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Solution

The fourth proportional to 869,152.90, 1,217,643.50 and 869,152.90 is: 1,217,643.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,152.90 : 1,217,643.50 = 869,152.90 : x
  2. Step 2: Convert to fraction form
    869,152.90/1,217,643.50 = 869,152.90/x
  3. Step 3: Cross multiply
    869,152.90x = 1,217,643.50 × 869,152.90
  4. Step 4: Simplify right side
    869,152.90x = 1,058,318,379,191.15
  5. Step 5: Solve for x
    x = 1,058,318,379,191.15/869,152.90
  6. Step 6: Final answer
    x = 1,217,643.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.