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Finding the Fourth Proportional to 612,754.76, 845,589.44 and 340,816.80

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Solution

The fourth proportional to 612,754.76, 845,589.44 and 340,816.80 is: 470,320.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,754.76 : 845,589.44 = 340,816.80 : x
  2. Step 2: Convert to fraction form
    612,754.76/845,589.44 = 340,816.80/x
  3. Step 3: Cross multiply
    612,754.76x = 845,589.44 × 340,816.80
  4. Step 4: Simplify right side
    612,754.76x = 288,191,087,054.59
  5. Step 5: Solve for x
    x = 288,191,087,054.59/612,754.76
  6. Step 6: Final answer
    x = 470,320.44

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Double scale
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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.