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Finding the Fourth Proportional to 565,921.91, 780,576.51 and 384,318.29

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Solution

The fourth proportional to 565,921.91, 780,576.51 and 384,318.29 is: 530,090.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,921.91 : 780,576.51 = 384,318.29 : x
  2. Step 2: Convert to fraction form
    565,921.91/780,576.51 = 384,318.29/x
  3. Step 3: Cross multiply
    565,921.91x = 780,576.51 × 384,318.29
  4. Step 4: Simplify right side
    565,921.91x = 299,989,831,488.81
  5. Step 5: Solve for x
    x = 299,989,831,488.81/565,921.91
  6. Step 6: Final answer
    x = 530,090.50

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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.