Home / 1,290,172.62-1,780,483.90-709,439.95

Finding the Fourth Proportional to 1,290,172.62, 1,780,483.90 and 709,439.95

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Solution

The fourth proportional to 1,290,172.62, 1,780,483.90 and 709,439.95 is: 979,052.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,172.62 : 1,780,483.90 = 709,439.95 : x
  2. Step 2: Convert to fraction form
    1,290,172.62/1,780,483.90 = 709,439.95/x
  3. Step 3: Cross multiply
    1,290,172.62x = 1,780,483.90 × 709,439.95
  4. Step 4: Simplify right side
    1,290,172.62x = 1,263,146,400,089.39
  5. Step 5: Solve for x
    x = 1,263,146,400,089.39/1,290,172.62
  6. Step 6: Final answer
    x = 979,052.25

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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.