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Finding the Fourth Proportional to 520,454.43, 780,149.88 and 295,339.50

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Solution

The fourth proportional to 520,454.43, 780,149.88 and 295,339.50 is: 442,707.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,454.43 : 780,149.88 = 295,339.50 : x
  2. Step 2: Convert to fraction form
    520,454.43/780,149.88 = 295,339.50/x
  3. Step 3: Cross multiply
    520,454.43x = 780,149.88 × 295,339.50
  4. Step 4: Simplify right side
    520,454.43x = 230,409,075,484.26
  5. Step 5: Solve for x
    x = 230,409,075,484.26/520,454.43
  6. Step 6: Final answer
    x = 442,707.49

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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.