Home / 718,101.48-990,968.10-395,841.48

Finding the Fourth Proportional to 718,101.48, 990,968.10 and 395,841.48

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Solution

The fourth proportional to 718,101.48, 990,968.10 and 395,841.48 is: 546,254.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,101.48 : 990,968.10 = 395,841.48 : x
  2. Step 2: Convert to fraction form
    718,101.48/990,968.10 = 395,841.48/x
  3. Step 3: Cross multiply
    718,101.48x = 990,968.10 × 395,841.48
  4. Step 4: Simplify right side
    718,101.48x = 392,266,279,336.79
  5. Step 5: Solve for x
    x = 392,266,279,336.79/718,101.48
  6. Step 6: Final answer
    x = 546,254.66

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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.