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Finding the Fourth Proportional to 565,657.38, 780,621.96 and 307,551.69

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Solution

The fourth proportional to 565,657.38, 780,621.96 and 307,551.69 is: 424,429.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,657.38 : 780,621.96 = 307,551.69 : x
  2. Step 2: Convert to fraction form
    565,657.38/780,621.96 = 307,551.69/x
  3. Step 3: Cross multiply
    565,657.38x = 780,621.96 × 307,551.69
  4. Step 4: Simplify right side
    565,657.38x = 240,081,603,049.11
  5. Step 5: Solve for x
    x = 240,081,603,049.11/565,657.38
  6. Step 6: Final answer
    x = 424,429.37

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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.