Home / 630,375.15-869,913.67-358,443.11

Finding the Fourth Proportional to 630,375.15, 869,913.67 and 358,443.11

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Solution

The fourth proportional to 630,375.15, 869,913.67 and 358,443.11 is: 494,649.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,375.15 : 869,913.67 = 358,443.11 : x
  2. Step 2: Convert to fraction form
    630,375.15/869,913.67 = 358,443.11/x
  3. Step 3: Cross multiply
    630,375.15x = 869,913.67 × 358,443.11
  4. Step 4: Simplify right side
    630,375.15x = 311,814,559,514.10
  5. Step 5: Solve for x
    x = 311,814,559,514.10/630,375.15
  6. Step 6: Final answer
    x = 494,649.19

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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.