Home / 643,780.48-888,947.52-417,811.84

Finding the Fourth Proportional to 643,780.48, 888,947.52 and 417,811.84

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Solution

The fourth proportional to 643,780.48, 888,947.52 and 417,811.84 is: 576,924.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,780.48 : 888,947.52 = 417,811.84 : x
  2. Step 2: Convert to fraction form
    643,780.48/888,947.52 = 417,811.84/x
  3. Step 3: Cross multiply
    643,780.48x = 888,947.52 × 417,811.84
  4. Step 4: Simplify right side
    643,780.48x = 371,412,798,994.64
  5. Step 5: Solve for x
    x = 371,412,798,994.64/643,780.48
  6. Step 6: Final answer
    x = 576,924.60

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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.