Home / 1,313,011.72-1,811,956.98-709,399.72

Finding the Fourth Proportional to 1,313,011.72, 1,811,956.98 and 709,399.72

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Solution

The fourth proportional to 1,313,011.72, 1,811,956.98 and 709,399.72 is: 978,972.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,011.72 : 1,811,956.98 = 709,399.72 : x
  2. Step 2: Convert to fraction form
    1,313,011.72/1,811,956.98 = 709,399.72/x
  3. Step 3: Cross multiply
    1,313,011.72x = 1,811,956.98 × 709,399.72
  4. Step 4: Simplify right side
    1,313,011.72x = 1,285,401,774,264.05
  5. Step 5: Solve for x
    x = 1,285,401,774,264.05/1,313,011.72
  6. Step 6: Final answer
    x = 978,972.05

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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.