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Finding the Fourth Proportional to 450,043.89, 619,992.79 and 313,830.24

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Solution

The fourth proportional to 450,043.89, 619,992.79 and 313,830.24 is: 432,341.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,043.89 : 619,992.79 = 313,830.24 : x
  2. Step 2: Convert to fraction form
    450,043.89/619,992.79 = 313,830.24/x
  3. Step 3: Cross multiply
    450,043.89x = 619,992.79 × 313,830.24
  4. Step 4: Simplify right side
    450,043.89x = 194,572,486,083.97
  5. Step 5: Solve for x
    x = 194,572,486,083.97/450,043.89
  6. Step 6: Final answer
    x = 432,341.13

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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.