Home / 820,018.84-1,230,575.46-287,539.48

Finding the Fourth Proportional to 820,018.84, 1,230,575.46 and 287,539.48

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Solution

The fourth proportional to 820,018.84, 1,230,575.46 and 287,539.48 is: 431,501.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,018.84 : 1,230,575.46 = 287,539.48 : x
  2. Step 2: Convert to fraction form
    820,018.84/1,230,575.46 = 287,539.48/x
  3. Step 3: Cross multiply
    820,018.84x = 1,230,575.46 × 287,539.48
  4. Step 4: Simplify right side
    820,018.84x = 353,839,027,869.16
  5. Step 5: Solve for x
    x = 353,839,027,869.16/820,018.84
  6. Step 6: Final answer
    x = 431,501.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.