Home / 687,429.23-949,080.26-644,535.67

Finding the Fourth Proportional to 687,429.23, 949,080.26 and 644,535.67

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Solution

The fourth proportional to 687,429.23, 949,080.26 and 644,535.67 is: 889,860.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,429.23 : 949,080.26 = 644,535.67 : x
  2. Step 2: Convert to fraction form
    687,429.23/949,080.26 = 644,535.67/x
  3. Step 3: Cross multiply
    687,429.23x = 949,080.26 × 644,535.67
  4. Step 4: Simplify right side
    687,429.23x = 611,716,078,680.44
  5. Step 5: Solve for x
    x = 611,716,078,680.44/687,429.23
  6. Step 6: Final answer
    x = 889,860.44

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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.