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Finding the Fourth Proportional to 520,059.55, 778,922.92 and 426,747.55

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Solution

The fourth proportional to 520,059.55, 778,922.92 and 426,747.55 is: 639,164.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,059.55 : 778,922.92 = 426,747.55 : x
  2. Step 2: Convert to fraction form
    520,059.55/778,922.92 = 426,747.55/x
  3. Step 3: Cross multiply
    520,059.55x = 778,922.92 × 426,747.55
  4. Step 4: Simplify right side
    520,059.55x = 332,403,447,748.85
  5. Step 5: Solve for x
    x = 332,403,447,748.85/520,059.55
  6. Step 6: Final answer
    x = 639,164.20

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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.