Home / 768,421.29-1,060,378.24-428,911.41

Finding the Fourth Proportional to 768,421.29, 1,060,378.24 and 428,911.41

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Solution

The fourth proportional to 768,421.29, 1,060,378.24 and 428,911.41 is: 591,873.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,421.29 : 1,060,378.24 = 428,911.41 : x
  2. Step 2: Convert to fraction form
    768,421.29/1,060,378.24 = 428,911.41/x
  3. Step 3: Cross multiply
    768,421.29x = 1,060,378.24 × 428,911.41
  4. Step 4: Simplify right side
    768,421.29x = 454,808,326,051.72
  5. Step 5: Solve for x
    x = 454,808,326,051.72/768,421.29
  6. Step 6: Final answer
    x = 591,873.67

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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.