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Finding the Fourth Proportional to 709,868.14, 979,703.94 and 404,018.89

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Solution

The fourth proportional to 709,868.14, 979,703.94 and 404,018.89 is: 557,594.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,868.14 : 979,703.94 = 404,018.89 : x
  2. Step 2: Convert to fraction form
    709,868.14/979,703.94 = 404,018.89/x
  3. Step 3: Cross multiply
    709,868.14x = 979,703.94 × 404,018.89
  4. Step 4: Simplify right side
    709,868.14x = 395,818,898,367.43
  5. Step 5: Solve for x
    x = 395,818,898,367.43/709,868.14
  6. Step 6: Final answer
    x = 557,594.96

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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.