Home / 718,200.09-991,175.81-395,973.18

Finding the Fourth Proportional to 718,200.09, 991,175.81 and 395,973.18

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Solution

The fourth proportional to 718,200.09, 991,175.81 and 395,973.18 is: 546,475.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,200.09 : 991,175.81 = 395,973.18 : x
  2. Step 2: Convert to fraction form
    718,200.09/991,175.81 = 395,973.18/x
  3. Step 3: Cross multiply
    718,200.09x = 991,175.81 × 395,973.18
  4. Step 4: Simplify right side
    718,200.09x = 392,479,035,444.91
  5. Step 5: Solve for x
    x = 392,479,035,444.91/718,200.09
  6. Step 6: Final answer
    x = 546,475.89

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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.