Home / 686,574.06-1,029,927.51-213,132.30

Finding the Fourth Proportional to 686,574.06, 1,029,927.51 and 213,132.30

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Solution

The fourth proportional to 686,574.06, 1,029,927.51 and 213,132.30 is: 319,719.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,574.06 : 1,029,927.51 = 213,132.30 : x
  2. Step 2: Convert to fraction form
    686,574.06/1,029,927.51 = 213,132.30/x
  3. Step 3: Cross multiply
    686,574.06x = 1,029,927.51 × 213,132.30
  4. Step 4: Simplify right side
    686,574.06x = 219,510,819,039.57
  5. Step 5: Solve for x
    x = 219,510,819,039.57/686,574.06
  6. Step 6: Final answer
    x = 319,719.07

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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.