Home / 684,860.27-945,135.03-378,931.67

Finding the Fourth Proportional to 684,860.27, 945,135.03 and 378,931.67

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Solution

The fourth proportional to 684,860.27, 945,135.03 and 378,931.67 is: 522,941.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,860.27 : 945,135.03 = 378,931.67 : x
  2. Step 2: Convert to fraction form
    684,860.27/945,135.03 = 378,931.67/x
  3. Step 3: Cross multiply
    684,860.27x = 945,135.03 × 378,931.67
  4. Step 4: Simplify right side
    684,860.27x = 358,141,595,293.40
  5. Step 5: Solve for x
    x = 358,141,595,293.40/684,860.27
  6. Step 6: Final answer
    x = 522,941.12

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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.