Home / 927,985.97-1,280,670.81-520,218.79

Finding the Fourth Proportional to 927,985.97, 1,280,670.81 and 520,218.79

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Solution

The fourth proportional to 927,985.97, 1,280,670.81 and 520,218.79 is: 717,930.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,985.97 : 1,280,670.81 = 520,218.79 : x
  2. Step 2: Convert to fraction form
    927,985.97/1,280,670.81 = 520,218.79/x
  3. Step 3: Cross multiply
    927,985.97x = 1,280,670.81 × 520,218.79
  4. Step 4: Simplify right side
    927,985.97x = 666,229,019,166.52
  5. Step 5: Solve for x
    x = 666,229,019,166.52/927,985.97
  6. Step 6: Final answer
    x = 717,930.06

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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.