Home / 686,572.70-1,030,053.45-213,305.90

Finding the Fourth Proportional to 686,572.70, 1,030,053.45 and 213,305.90

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Solution

The fourth proportional to 686,572.70, 1,030,053.45 and 213,305.90 is: 320,019.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,572.70 : 1,030,053.45 = 213,305.90 : x
  2. Step 2: Convert to fraction form
    686,572.70/1,030,053.45 = 213,305.90/x
  3. Step 3: Cross multiply
    686,572.70x = 1,030,053.45 × 213,305.90
  4. Step 4: Simplify right side
    686,572.70x = 219,716,478,200.36
  5. Step 5: Solve for x
    x = 219,716,478,200.36/686,572.70
  6. Step 6: Final answer
    x = 320,019.25

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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.