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Finding the Fourth Proportional to 717,990.22, 990,995.35 and 446,263.33

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Solution

The fourth proportional to 717,990.22, 990,995.35 and 446,263.33 is: 615,948.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,990.22 : 990,995.35 = 446,263.33 : x
  2. Step 2: Convert to fraction form
    717,990.22/990,995.35 = 446,263.33/x
  3. Step 3: Cross multiply
    717,990.22x = 990,995.35 × 446,263.33
  4. Step 4: Simplify right side
    717,990.22x = 442,244,884,905.52
  5. Step 5: Solve for x
    x = 442,244,884,905.52/717,990.22
  6. Step 6: Final answer
    x = 615,948.34

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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.