Home / 687,795.93-1,031,898.90-328,236.72

Finding the Fourth Proportional to 687,795.93, 1,031,898.90 and 328,236.72

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Solution

The fourth proportional to 687,795.93, 1,031,898.90 and 328,236.72 is: 492,452.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,795.93 : 1,031,898.90 = 328,236.72 : x
  2. Step 2: Convert to fraction form
    687,795.93/1,031,898.90 = 328,236.72/x
  3. Step 3: Cross multiply
    687,795.93x = 1,031,898.90 × 328,236.72
  4. Step 4: Simplify right side
    687,795.93x = 338,707,110,307.61
  5. Step 5: Solve for x
    x = 338,707,110,307.61/687,795.93
  6. Step 6: Final answer
    x = 492,452.91

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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.