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Finding the Fourth Proportional to 880,324.80, 1,319,320.80 and 780,014.40

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Solution

The fourth proportional to 880,324.80, 1,319,320.80 and 780,014.40 is: 1,168,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,324.80 : 1,319,320.80 = 780,014.40 : x
  2. Step 2: Convert to fraction form
    880,324.80/1,319,320.80 = 780,014.40/x
  3. Step 3: Cross multiply
    880,324.80x = 1,319,320.80 × 780,014.40
  4. Step 4: Simplify right side
    880,324.80x = 1,029,089,222,219.52
  5. Step 5: Solve for x
    x = 1,029,089,222,219.52/880,324.80
  6. Step 6: Final answer
    x = 1,168,988.11

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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.