Home / 565,787.04-780,764.40-311,123.04

Finding the Fourth Proportional to 565,787.04, 780,764.40 and 311,123.04

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Solution

The fourth proportional to 565,787.04, 780,764.40 and 311,123.04 is: 429,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,787.04 : 780,764.40 = 311,123.04 : x
  2. Step 2: Convert to fraction form
    565,787.04/780,764.40 = 311,123.04/x
  3. Step 3: Cross multiply
    565,787.04x = 780,764.40 × 311,123.04
  4. Step 4: Simplify right side
    565,787.04x = 242,913,793,651.78
  5. Step 5: Solve for x
    x = 242,913,793,651.78/565,787.04
  6. Step 6: Final answer
    x = 429,337.85

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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.