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Finding the Fourth Proportional to 709,002.67, 978,506.41 and 403,124.88

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Solution

The fourth proportional to 709,002.67, 978,506.41 and 403,124.88 is: 556,359.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,002.67 : 978,506.41 = 403,124.88 : x
  2. Step 2: Convert to fraction form
    709,002.67/978,506.41 = 403,124.88/x
  3. Step 3: Cross multiply
    709,002.67x = 978,506.41 × 403,124.88
  4. Step 4: Simplify right side
    709,002.67x = 394,460,281,772.07
  5. Step 5: Solve for x
    x = 394,460,281,772.07/709,002.67
  6. Step 6: Final answer
    x = 556,359.37

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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.