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Finding the Fourth Proportional to 611,733.20, 917,599.80 and 442,896.80

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Solution

The fourth proportional to 611,733.20, 917,599.80 and 442,896.80 is: 664,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,733.20 : 917,599.80 = 442,896.80 : x
  2. Step 2: Convert to fraction form
    611,733.20/917,599.80 = 442,896.80/x
  3. Step 3: Cross multiply
    611,733.20x = 917,599.80 × 442,896.80
  4. Step 4: Simplify right side
    611,733.20x = 406,402,015,100.64
  5. Step 5: Solve for x
    x = 406,402,015,100.64/611,733.20
  6. Step 6: Final answer
    x = 664,345.20

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.