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Finding the Fourth Proportional to 709,789.04, 979,594.80 and 403,939.80

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Solution

The fourth proportional to 709,789.04, 979,594.80 and 403,939.80 is: 557,485.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,789.04 : 979,594.80 = 403,939.80 : x
  2. Step 2: Convert to fraction form
    709,789.04/979,594.80 = 403,939.80/x
  3. Step 3: Cross multiply
    709,789.04x = 979,594.80 × 403,939.80
  4. Step 4: Simplify right side
    709,789.04x = 395,697,327,593.04
  5. Step 5: Solve for x
    x = 395,697,327,593.04/709,789.04
  6. Step 6: Final answer
    x = 557,485.82

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1.5x scale

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.