Home / 849,409.20-1,172,195.40-467,427.60

Finding the Fourth Proportional to 849,409.20, 1,172,195.40 and 467,427.60

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Solution

The fourth proportional to 849,409.20, 1,172,195.40 and 467,427.60 is: 645,055.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,409.20 : 1,172,195.40 = 467,427.60 : x
  2. Step 2: Convert to fraction form
    849,409.20/1,172,195.40 = 467,427.60/x
  3. Step 3: Cross multiply
    849,409.20x = 1,172,195.40 × 467,427.60
  4. Step 4: Simplify right side
    849,409.20x = 547,916,482,553.04
  5. Step 5: Solve for x
    x = 547,916,482,553.04/849,409.20
  6. Step 6: Final answer
    x = 645,055.98

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.