Home / 1,290,291.03-1,780,715.06-709,616.48

Finding the Fourth Proportional to 1,290,291.03, 1,780,715.06 and 709,616.48

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Solution

The fourth proportional to 1,290,291.03, 1,780,715.06 and 709,616.48 is: 979,333.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,291.03 : 1,780,715.06 = 709,616.48 : x
  2. Step 2: Convert to fraction form
    1,290,291.03/1,780,715.06 = 709,616.48/x
  3. Step 3: Cross multiply
    1,290,291.03x = 1,780,715.06 × 709,616.48
  4. Step 4: Simplify right side
    1,290,291.03x = 1,263,624,740,308.53
  5. Step 5: Solve for x
    x = 1,263,624,740,308.53/1,290,291.03
  6. Step 6: Final answer
    x = 979,333.12

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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.