Home / 717,942.72-990,767.52-395,664.32

Finding the Fourth Proportional to 717,942.72, 990,767.52 and 395,664.32

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Solution

The fourth proportional to 717,942.72, 990,767.52 and 395,664.32 is: 546,020.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,942.72 : 990,767.52 = 395,664.32 : x
  2. Step 2: Convert to fraction form
    717,942.72/990,767.52 = 395,664.32/x
  3. Step 3: Cross multiply
    717,942.72x = 990,767.52 × 395,664.32
  4. Step 4: Simplify right side
    717,942.72x = 392,011,357,078.89
  5. Step 5: Solve for x
    x = 392,011,357,078.89/717,942.72
  6. Step 6: Final answer
    x = 546,020.38

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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.