Home / 1,289,984.15-1,780,179.26-709,217.16

Finding the Fourth Proportional to 1,289,984.15, 1,780,179.26 and 709,217.16

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Solution

The fourth proportional to 1,289,984.15, 1,780,179.26 and 709,217.16 is: 978,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,984.15 : 1,780,179.26 = 709,217.16 : x
  2. Step 2: Convert to fraction form
    1,289,984.15/1,780,179.26 = 709,217.16/x
  3. Step 3: Cross multiply
    1,289,984.15x = 1,780,179.26 × 709,217.16
  4. Step 4: Simplify right side
    1,289,984.15x = 1,262,533,679,068.10
  5. Step 5: Solve for x
    x = 1,262,533,679,068.10/1,289,984.15
  6. Step 6: Final answer
    x = 978,720.30

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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.