Home / 811,627.02-1,217,428.16-279,152.66

Finding the Fourth Proportional to 811,627.02, 1,217,428.16 and 279,152.66

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Solution

The fourth proportional to 811,627.02, 1,217,428.16 and 279,152.66 is: 418,724.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,627.02 : 1,217,428.16 = 279,152.66 : x
  2. Step 2: Convert to fraction form
    811,627.02/1,217,428.16 = 279,152.66/x
  3. Step 3: Cross multiply
    811,627.02x = 1,217,428.16 × 279,152.66
  4. Step 4: Simplify right side
    811,627.02x = 339,848,310,870.71
  5. Step 5: Solve for x
    x = 339,848,310,870.71/811,627.02
  6. Step 6: Final answer
    x = 418,724.74

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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.