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Finding the Fourth Proportional to 1,312,794, 1,811,655.72 and 709,182

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Solution

The fourth proportional to 1,312,794, 1,811,655.72 and 709,182 is: 978,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,794 : 1,811,655.72 = 709,182 : x
  2. Step 2: Convert to fraction form
    1,312,794/1,811,655.72 = 709,182/x
  3. Step 3: Cross multiply
    1,312,794x = 1,811,655.72 × 709,182
  4. Step 4: Simplify right side
    1,312,794x = 1,284,793,626,821.04
  5. Step 5: Solve for x
    x = 1,284,793,626,821.04/1,312,794
  6. Step 6: Final answer
    x = 978,671.16

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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.