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Finding the Fourth Proportional to 709,065.05, 978,470.39 and 403,098.95

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Solution

The fourth proportional to 709,065.05, 978,470.39 and 403,098.95 is: 556,254.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,065.05 : 978,470.39 = 403,098.95 : x
  2. Step 2: Convert to fraction form
    709,065.05/978,470.39 = 403,098.95/x
  3. Step 3: Cross multiply
    709,065.05x = 978,470.39 × 403,098.95
  4. Step 4: Simplify right side
    709,065.05x = 394,420,390,269.01
  5. Step 5: Solve for x
    x = 394,420,390,269.01/709,065.05
  6. Step 6: Final answer
    x = 556,254.17

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.