Home / 750,800.08-1,036,120.84-428,503.71

Finding the Fourth Proportional to 750,800.08, 1,036,120.84 and 428,503.71

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Solution

The fourth proportional to 750,800.08, 1,036,120.84 and 428,503.71 is: 591,344.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,800.08 : 1,036,120.84 = 428,503.71 : x
  2. Step 2: Convert to fraction form
    750,800.08/1,036,120.84 = 428,503.71/x
  3. Step 3: Cross multiply
    750,800.08x = 1,036,120.84 × 428,503.71
  4. Step 4: Simplify right side
    750,800.08x = 443,981,623,948.32
  5. Step 5: Solve for x
    x = 443,981,623,948.32/750,800.08
  6. Step 6: Final answer
    x = 591,344.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.