Home / 643,818.54-888,463.17-357,331.26

Finding the Fourth Proportional to 643,818.54, 888,463.17 and 357,331.26

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Solution

The fourth proportional to 643,818.54, 888,463.17 and 357,331.26 is: 493,113.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,818.54 : 888,463.17 = 357,331.26 : x
  2. Step 2: Convert to fraction form
    643,818.54/888,463.17 = 357,331.26/x
  3. Step 3: Cross multiply
    643,818.54x = 888,463.17 × 357,331.26
  4. Step 4: Simplify right side
    643,818.54x = 317,475,663,999.69
  5. Step 5: Solve for x
    x = 317,475,663,999.69/643,818.54
  6. Step 6: Final answer
    x = 493,113.58

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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.