Home / 643,844.84-888,492.18-357,347.72

Finding the Fourth Proportional to 643,844.84, 888,492.18 and 357,347.72

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Solution

The fourth proportional to 643,844.84, 888,492.18 and 357,347.72 is: 493,132.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,844.84 : 888,492.18 = 357,347.72 : x
  2. Step 2: Convert to fraction form
    643,844.84/888,492.18 = 357,347.72/x
  3. Step 3: Cross multiply
    643,844.84x = 888,492.18 × 357,347.72
  4. Step 4: Simplify right side
    643,844.84x = 317,500,654,760.83
  5. Step 5: Solve for x
    x = 317,500,654,760.83/643,844.84
  6. Step 6: Final answer
    x = 493,132.25

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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.