Home / 1,216,814.96-1,679,429.28-781,776.14

Finding the Fourth Proportional to 1,216,814.96, 1,679,429.28 and 781,776.14

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Solution

The fourth proportional to 1,216,814.96, 1,679,429.28 and 781,776.14 is: 1,078,995.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,814.96 : 1,679,429.28 = 781,776.14 : x
  2. Step 2: Convert to fraction form
    1,216,814.96/1,679,429.28 = 781,776.14/x
  3. Step 3: Cross multiply
    1,216,814.96x = 1,679,429.28 × 781,776.14
  4. Step 4: Simplify right side
    1,216,814.96x = 1,312,937,739,921.38
  5. Step 5: Solve for x
    x = 1,312,937,739,921.38/1,216,814.96
  6. Step 6: Final answer
    x = 1,078,995.40

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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.