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Finding the Fourth Proportional to 709,326.48, 978,865.50 and 403,402.96

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Solution

The fourth proportional to 709,326.48, 978,865.50 and 403,402.96 is: 556,693.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,326.48 : 978,865.50 = 403,402.96 : x
  2. Step 2: Convert to fraction form
    709,326.48/978,865.50 = 403,402.96/x
  3. Step 3: Cross multiply
    709,326.48x = 978,865.50 × 403,402.96
  4. Step 4: Simplify right side
    709,326.48x = 394,877,240,141.88
  5. Step 5: Solve for x
    x = 394,877,240,141.88/709,326.48
  6. Step 6: Final answer
    x = 556,693.22

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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.