Home / 420,050.79-579,618.54-256,789.44

Finding the Fourth Proportional to 420,050.79, 579,618.54 and 256,789.44

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Solution

The fourth proportional to 420,050.79, 579,618.54 and 256,789.44 is: 354,337.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,050.79 : 579,618.54 = 256,789.44 : x
  2. Step 2: Convert to fraction form
    420,050.79/579,618.54 = 256,789.44/x
  3. Step 3: Cross multiply
    420,050.79x = 579,618.54 × 256,789.44
  4. Step 4: Simplify right side
    420,050.79x = 148,839,920,300.22
  5. Step 5: Solve for x
    x = 148,839,920,300.22/420,050.79
  6. Step 6: Final answer
    x = 354,337.91

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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.