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Finding the Fourth Proportional to 579,343.53, 869,255.35 and 312,790.75

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Solution

The fourth proportional to 579,343.53, 869,255.35 and 312,790.75 is: 469,315.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,343.53 : 869,255.35 = 312,790.75 : x
  2. Step 2: Convert to fraction form
    579,343.53/869,255.35 = 312,790.75/x
  3. Step 3: Cross multiply
    579,343.53x = 869,255.35 × 312,790.75
  4. Step 4: Simplify right side
    579,343.53x = 271,895,032,868.01
  5. Step 5: Solve for x
    x = 271,895,032,868.01/579,343.53
  6. Step 6: Final answer
    x = 469,315.74

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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.