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Finding the Fourth Proportional to 565,585.78, 780,513.45 and 307,463.22

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Solution

The fourth proportional to 565,585.78, 780,513.45 and 307,463.22 is: 424,302.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,585.78 : 780,513.45 = 307,463.22 : x
  2. Step 2: Convert to fraction form
    565,585.78/780,513.45 = 307,463.22/x
  3. Step 3: Cross multiply
    565,585.78x = 780,513.45 × 307,463.22
  4. Step 4: Simplify right side
    565,585.78x = 239,979,180,541.59
  5. Step 5: Solve for x
    x = 239,979,180,541.59/565,585.78
  6. Step 6: Final answer
    x = 424,302.01

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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.