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Finding the Fourth Proportional to 554,968.76, 765,856.89 and 300,319.95

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Solution

The fourth proportional to 554,968.76, 765,856.89 and 300,319.95 is: 414,441.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,968.76 : 765,856.89 = 300,319.95 : x
  2. Step 2: Convert to fraction form
    554,968.76/765,856.89 = 300,319.95/x
  3. Step 3: Cross multiply
    554,968.76x = 765,856.89 × 300,319.95
  4. Step 4: Simplify right side
    554,968.76x = 230,002,098,055.03
  5. Step 5: Solve for x
    x = 230,002,098,055.03/554,968.76
  6. Step 6: Final answer
    x = 414,441.52

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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.