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Finding the Fourth Proportional to 879,436.80, 1,188,172.80 and 879,436.80

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Solution

The fourth proportional to 879,436.80, 1,188,172.80 and 879,436.80 is: 1,188,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,436.80 : 1,188,172.80 = 879,436.80 : x
  2. Step 2: Convert to fraction form
    879,436.80/1,188,172.80 = 879,436.80/x
  3. Step 3: Cross multiply
    879,436.80x = 1,188,172.80 × 879,436.80
  4. Step 4: Simplify right side
    879,436.80x = 1,044,922,885,079.04
  5. Step 5: Solve for x
    x = 1,044,922,885,079.04/879,436.80
  6. Step 6: Final answer
    x = 1,188,172.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.