Home / 630,447.12-869,981.38-358,581.15

Finding the Fourth Proportional to 630,447.12, 869,981.38 and 358,581.15

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Solution

The fourth proportional to 630,447.12, 869,981.38 and 358,581.15 is: 494,821.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,447.12 : 869,981.38 = 358,581.15 : x
  2. Step 2: Convert to fraction form
    630,447.12/869,981.38 = 358,581.15/x
  3. Step 3: Cross multiply
    630,447.12x = 869,981.38 × 358,581.15
  4. Step 4: Simplify right side
    630,447.12x = 311,958,922,822.53
  5. Step 5: Solve for x
    x = 311,958,922,822.53/630,447.12
  6. Step 6: Final answer
    x = 494,821.71

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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.