Home / 717,631.41-990,326.75-395,334.03

Finding the Fourth Proportional to 717,631.41, 990,326.75 and 395,334.03

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Solution

The fourth proportional to 717,631.41, 990,326.75 and 395,334.03 is: 545,558.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,631.41 : 990,326.75 = 395,334.03 : x
  2. Step 2: Convert to fraction form
    717,631.41/990,326.75 = 395,334.03/x
  3. Step 3: Cross multiply
    717,631.41x = 990,326.75 × 395,334.03
  4. Step 4: Simplify right side
    717,631.41x = 391,509,863,117.63
  5. Step 5: Solve for x
    x = 391,509,863,117.63/717,631.41
  6. Step 6: Final answer
    x = 545,558.43

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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.