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Finding the Fourth Proportional to 709,030.04, 978,464.52 and 386,747.04

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Solution

The fourth proportional to 709,030.04, 978,464.52 and 386,747.04 is: 533,712.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,030.04 : 978,464.52 = 386,747.04 : x
  2. Step 2: Convert to fraction form
    709,030.04/978,464.52 = 386,747.04/x
  3. Step 3: Cross multiply
    709,030.04x = 978,464.52 × 386,747.04
  4. Step 4: Simplify right side
    709,030.04x = 378,418,256,855.02
  5. Step 5: Solve for x
    x = 378,418,256,855.02/709,030.04
  6. Step 6: Final answer
    x = 533,712.59

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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.