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Finding the Fourth Proportional to 709,866.64, 979,701.87 and 404,017.39

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Solution

The fourth proportional to 709,866.64, 979,701.87 and 404,017.39 is: 557,592.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,866.64 : 979,701.87 = 404,017.39 : x
  2. Step 2: Convert to fraction form
    709,866.64/979,701.87 = 404,017.39/x
  3. Step 3: Cross multiply
    709,866.64x = 979,701.87 × 404,017.39
  4. Step 4: Simplify right side
    709,866.64x = 395,816,592,495.52
  5. Step 5: Solve for x
    x = 395,816,592,495.52/709,866.64
  6. Step 6: Final answer
    x = 557,592.89

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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.