Home / 781,386.30-1,172,079.45-248,946.30

Finding the Fourth Proportional to 781,386.30, 1,172,079.45 and 248,946.30

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Solution

The fourth proportional to 781,386.30, 1,172,079.45 and 248,946.30 is: 373,419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,386.30 : 1,172,079.45 = 248,946.30 : x
  2. Step 2: Convert to fraction form
    781,386.30/1,172,079.45 = 248,946.30/x
  3. Step 3: Cross multiply
    781,386.30x = 1,172,079.45 × 248,946.30
  4. Step 4: Simplify right side
    781,386.30x = 291,784,842,383.54
  5. Step 5: Solve for x
    x = 291,784,842,383.54/781,386.30
  6. Step 6: Final answer
    x = 373,419.45

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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.