Home / 643,564.40-884,969.52-558,533.84

Finding the Fourth Proportional to 643,564.40, 884,969.52 and 558,533.84

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Solution

The fourth proportional to 643,564.40, 884,969.52 and 558,533.84 is: 768,043.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,564.40 : 884,969.52 = 558,533.84 : x
  2. Step 2: Convert to fraction form
    643,564.40/884,969.52 = 558,533.84/x
  3. Step 3: Cross multiply
    643,564.40x = 884,969.52 × 558,533.84
  4. Step 4: Simplify right side
    643,564.40x = 494,285,424,288.56
  5. Step 5: Solve for x
    x = 494,285,424,288.56/643,564.40
  6. Step 6: Final answer
    x = 768,043.45

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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.