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Finding the Fourth Proportional to 717,394.06, 990,048.55 and 395,104.06

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Solution

The fourth proportional to 717,394.06, 990,048.55 and 395,104.06 is: 545,268.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,394.06 : 990,048.55 = 395,104.06 : x
  2. Step 2: Convert to fraction form
    717,394.06/990,048.55 = 395,104.06/x
  3. Step 3: Cross multiply
    717,394.06x = 990,048.55 × 395,104.06
  4. Step 4: Simplify right side
    717,394.06x = 391,172,196,751.87
  5. Step 5: Solve for x
    x = 391,172,196,751.87/717,394.06
  6. Step 6: Final answer
    x = 545,268.24

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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.