Home / 686,721.40-1,030,065.90-188,085.40

Finding the Fourth Proportional to 686,721.40, 1,030,065.90 and 188,085.40

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Solution

The fourth proportional to 686,721.40, 1,030,065.90 and 188,085.40 is: 282,123.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,721.40 : 1,030,065.90 = 188,085.40 : x
  2. Step 2: Convert to fraction form
    686,721.40/1,030,065.90 = 188,085.40/x
  3. Step 3: Cross multiply
    686,721.40x = 1,030,065.90 × 188,085.40
  4. Step 4: Simplify right side
    686,721.40x = 193,740,356,827.86
  5. Step 5: Solve for x
    x = 193,740,356,827.86/686,721.40
  6. Step 6: Final answer
    x = 282,123.66

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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.