Home / 817,918.12-1,227,127.58-418,841.46

Finding the Fourth Proportional to 817,918.12, 1,227,127.58 and 418,841.46

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Solution

The fourth proportional to 817,918.12, 1,227,127.58 and 418,841.46 is: 628,390.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,918.12 : 1,227,127.58 = 418,841.46 : x
  2. Step 2: Convert to fraction form
    817,918.12/1,227,127.58 = 418,841.46/x
  3. Step 3: Cross multiply
    817,918.12x = 1,227,127.58 × 418,841.46
  4. Step 4: Simplify right side
    817,918.12x = 513,971,907,213.47
  5. Step 5: Solve for x
    x = 513,971,907,213.47/817,918.12
  6. Step 6: Final answer
    x = 628,390.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.