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Finding the Fourth Proportional to 565,511.04, 780,410.76 and 307,387.83

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Solution

The fourth proportional to 565,511.04, 780,410.76 and 307,387.83 is: 424,198.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,511.04 : 780,410.76 = 307,387.83 : x
  2. Step 2: Convert to fraction form
    565,511.04/780,410.76 = 307,387.83/x
  3. Step 3: Cross multiply
    565,511.04x = 780,410.76 × 307,387.83
  4. Step 4: Simplify right side
    565,511.04x = 239,888,770,025.05
  5. Step 5: Solve for x
    x = 239,888,770,025.05/565,511.04
  6. Step 6: Final answer
    x = 424,198.21

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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.