Home / 638,922.90-958,282.76-212,423.24

Finding the Fourth Proportional to 638,922.90, 958,282.76 and 212,423.24

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Solution

The fourth proportional to 638,922.90, 958,282.76 and 212,423.24 is: 318,601.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,922.90 : 958,282.76 = 212,423.24 : x
  2. Step 2: Convert to fraction form
    638,922.90/958,282.76 = 212,423.24/x
  3. Step 3: Cross multiply
    638,922.90x = 958,282.76 × 212,423.24
  4. Step 4: Simplify right side
    638,922.90x = 203,561,528,715.34
  5. Step 5: Solve for x
    x = 203,561,528,715.34/638,922.90
  6. Step 6: Final answer
    x = 318,601.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.