Home / 687,683.39-1,031,749.20-345,950.46

Finding the Fourth Proportional to 687,683.39, 1,031,749.20 and 345,950.46

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Solution

The fourth proportional to 687,683.39, 1,031,749.20 and 345,950.46 is: 519,038.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,683.39 : 1,031,749.20 = 345,950.46 : x
  2. Step 2: Convert to fraction form
    687,683.39/1,031,749.20 = 345,950.46/x
  3. Step 3: Cross multiply
    687,683.39x = 1,031,749.20 × 345,950.46
  4. Step 4: Simplify right side
    687,683.39x = 356,934,110,344.63
  5. Step 5: Solve for x
    x = 356,934,110,344.63/687,683.39
  6. Step 6: Final answer
    x = 519,038.44

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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.