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Finding the Fourth Proportional to 822,112.80, 1,232,002.80 and 607,203.60

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Solution

The fourth proportional to 822,112.80, 1,232,002.80 and 607,203.60 is: 909,943.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,112.80 : 1,232,002.80 = 607,203.60 : x
  2. Step 2: Convert to fraction form
    822,112.80/1,232,002.80 = 607,203.60/x
  3. Step 3: Cross multiply
    822,112.80x = 1,232,002.80 × 607,203.60
  4. Step 4: Simplify right side
    822,112.80x = 748,076,535,370.08
  5. Step 5: Solve for x
    x = 748,076,535,370.08/822,112.80
  6. Step 6: Final answer
    x = 909,943.91

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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.