Home / 630,381.38-869,890.88-358,515.41

Finding the Fourth Proportional to 630,381.38, 869,890.88 and 358,515.41

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Solution

The fourth proportional to 630,381.38, 869,890.88 and 358,515.41 is: 494,731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,381.38 : 869,890.88 = 358,515.41 : x
  2. Step 2: Convert to fraction form
    630,381.38/869,890.88 = 358,515.41/x
  3. Step 3: Cross multiply
    630,381.38x = 869,890.88 × 358,515.41
  4. Step 4: Simplify right side
    630,381.38x = 311,869,283,705.88
  5. Step 5: Solve for x
    x = 311,869,283,705.88/630,381.38
  6. Step 6: Final answer
    x = 494,731.12

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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.