Home / 686,749.50-1,030,407.75-370,834.38

Finding the Fourth Proportional to 686,749.50, 1,030,407.75 and 370,834.38

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Solution

The fourth proportional to 686,749.50, 1,030,407.75 and 370,834.38 is: 556,404.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,749.50 : 1,030,407.75 = 370,834.38 : x
  2. Step 2: Convert to fraction form
    686,749.50/1,030,407.75 = 370,834.38/x
  3. Step 3: Cross multiply
    686,749.50x = 1,030,407.75 × 370,834.38
  4. Step 4: Simplify right side
    686,749.50x = 382,110,619,118.45
  5. Step 5: Solve for x
    x = 382,110,619,118.45/686,749.50
  6. Step 6: Final answer
    x = 556,404.66

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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.