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Finding the Fourth Proportional to 643,704.04, 888,341.88 and 357,226.48

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Solution

The fourth proportional to 643,704.04, 888,341.88 and 357,226.48 is: 492,989.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,704.04 : 888,341.88 = 357,226.48 : x
  2. Step 2: Convert to fraction form
    643,704.04/888,341.88 = 357,226.48/x
  3. Step 3: Cross multiply
    643,704.04x = 888,341.88 × 357,226.48
  4. Step 4: Simplify right side
    643,704.04x = 317,339,242,828.98
  5. Step 5: Solve for x
    x = 317,339,242,828.98/643,704.04
  6. Step 6: Final answer
    x = 492,989.36

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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.