Home / 565,422.23-780,288.71-307,299.18

Finding the Fourth Proportional to 565,422.23, 780,288.71 and 307,299.18

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Solution

The fourth proportional to 565,422.23, 780,288.71 and 307,299.18 is: 424,076.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,422.23 : 780,288.71 = 307,299.18 : x
  2. Step 2: Convert to fraction form
    565,422.23/780,288.71 = 307,299.18/x
  3. Step 3: Cross multiply
    565,422.23x = 780,288.71 × 307,299.18
  4. Step 4: Simplify right side
    565,422.23x = 239,782,079,209.76
  5. Step 5: Solve for x
    x = 239,782,079,209.76/565,422.23
  6. Step 6: Final answer
    x = 424,076.15

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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.