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Finding the Fourth Proportional to 591,916.92, 817,067.48 and 387,980.98

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Solution

The fourth proportional to 591,916.92, 817,067.48 and 387,980.98 is: 535,559.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,916.92 : 817,067.48 = 387,980.98 : x
  2. Step 2: Convert to fraction form
    591,916.92/817,067.48 = 387,980.98/x
  3. Step 3: Cross multiply
    591,916.92x = 817,067.48 × 387,980.98
  4. Step 4: Simplify right side
    591,916.92x = 317,006,641,616.53
  5. Step 5: Solve for x
    x = 317,006,641,616.53/591,916.92
  6. Step 6: Final answer
    x = 535,559.35

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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.