Home / 643,569.12-888,516.56-500,058.40

Finding the Fourth Proportional to 643,569.12, 888,516.56 and 500,058.40

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Solution

The fourth proportional to 643,569.12, 888,516.56 and 500,058.40 is: 690,384.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,569.12 : 888,516.56 = 500,058.40 : x
  2. Step 2: Convert to fraction form
    643,569.12/888,516.56 = 500,058.40/x
  3. Step 3: Cross multiply
    643,569.12x = 888,516.56 × 500,058.40
  4. Step 4: Simplify right side
    643,569.12x = 444,310,169,367.10
  5. Step 5: Solve for x
    x = 444,310,169,367.10/643,569.12
  6. Step 6: Final answer
    x = 690,384.54

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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.