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Finding the Fourth Proportional to 717,944.72, 990,770.28 and 395,666.32

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Solution

The fourth proportional to 717,944.72, 990,770.28 and 395,666.32 is: 546,023.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,944.72 : 990,770.28 = 395,666.32 : x
  2. Step 2: Convert to fraction form
    717,944.72/990,770.28 = 395,666.32/x
  3. Step 3: Cross multiply
    717,944.72x = 990,770.28 × 395,666.32
  4. Step 4: Simplify right side
    717,944.72x = 392,014,430,652.97
  5. Step 5: Solve for x
    x = 392,014,430,652.97/717,944.72
  6. Step 6: Final answer
    x = 546,023.14

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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.