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Finding the Fourth Proportional to 822,076.93, 1,230,014.71 and 485,300.80

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Solution

The fourth proportional to 822,076.93, 1,230,014.71 and 485,300.80 is: 726,120.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,076.93 : 1,230,014.71 = 485,300.80 : x
  2. Step 2: Convert to fraction form
    822,076.93/1,230,014.71 = 485,300.80/x
  3. Step 3: Cross multiply
    822,076.93x = 1,230,014.71 × 485,300.80
  4. Step 4: Simplify right side
    822,076.93x = 596,927,122,774.77
  5. Step 5: Solve for x
    x = 596,927,122,774.77/822,076.93
  6. Step 6: Final answer
    x = 726,120.76

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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.