Home / 643,962.36-888,623.54-357,459.90

Finding the Fourth Proportional to 643,962.36, 888,623.54 and 357,459.90

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Solution

The fourth proportional to 643,962.36, 888,623.54 and 357,459.90 is: 493,269.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,962.36 : 888,623.54 = 357,459.90 : x
  2. Step 2: Convert to fraction form
    643,962.36/888,623.54 = 357,459.90/x
  3. Step 3: Cross multiply
    643,962.36x = 888,623.54 × 357,459.90
  4. Step 4: Simplify right side
    643,962.36x = 317,647,277,966.88
  5. Step 5: Solve for x
    x = 317,647,277,966.88/643,962.36
  6. Step 6: Final answer
    x = 493,269.94

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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.