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Finding the Fourth Proportional to 565,790.04, 780,768.54 and 311,126.04

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Solution

The fourth proportional to 565,790.04, 780,768.54 and 311,126.04 is: 429,341.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,790.04 : 780,768.54 = 311,126.04 : x
  2. Step 2: Convert to fraction form
    565,790.04/780,768.54 = 311,126.04/x
  3. Step 3: Cross multiply
    565,790.04x = 780,768.54 × 311,126.04
  4. Step 4: Simplify right side
    565,790.04x = 242,917,424,006.78
  5. Step 5: Solve for x
    x = 242,917,424,006.78/565,790.04
  6. Step 6: Final answer
    x = 429,341.99

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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.