Home / 849,905.80-1,274,858.70-288,940.30

Finding the Fourth Proportional to 849,905.80, 1,274,858.70 and 288,940.30

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Solution

The fourth proportional to 849,905.80, 1,274,858.70 and 288,940.30 is: 433,410.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,905.80 : 1,274,858.70 = 288,940.30 : x
  2. Step 2: Convert to fraction form
    849,905.80/1,274,858.70 = 288,940.30/x
  3. Step 3: Cross multiply
    849,905.80x = 1,274,858.70 × 288,940.30
  4. Step 4: Simplify right side
    849,905.80x = 368,358,055,235.61
  5. Step 5: Solve for x
    x = 368,358,055,235.61/849,905.80
  6. Step 6: Final answer
    x = 433,410.45

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Double scale
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Similar ratio
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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.