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Finding the Fourth Proportional to 709,860.81, 1,063,713.81 and 520,447.26

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Solution

The fourth proportional to 709,860.81, 1,063,713.81 and 520,447.26 is: 779,880.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,860.81 : 1,063,713.81 = 520,447.26 : x
  2. Step 2: Convert to fraction form
    709,860.81/1,063,713.81 = 520,447.26/x
  3. Step 3: Cross multiply
    709,860.81x = 1,063,713.81 × 520,447.26
  4. Step 4: Simplify right side
    709,860.81x = 553,606,937,838.66
  5. Step 5: Solve for x
    x = 553,606,937,838.66/709,860.81
  6. Step 6: Final answer
    x = 779,880.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.