Home / 807,640.30-1,211,460.45-492,712.30

Finding the Fourth Proportional to 807,640.30, 1,211,460.45 and 492,712.30

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Solution

The fourth proportional to 807,640.30, 1,211,460.45 and 492,712.30 is: 739,068.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,640.30 : 1,211,460.45 = 492,712.30 : x
  2. Step 2: Convert to fraction form
    807,640.30/1,211,460.45 = 492,712.30/x
  3. Step 3: Cross multiply
    807,640.30x = 1,211,460.45 × 492,712.30
  4. Step 4: Simplify right side
    807,640.30x = 596,901,464,678.54
  5. Step 5: Solve for x
    x = 596,901,464,678.54/807,640.30
  6. Step 6: Final answer
    x = 739,068.45

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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.