Home / 745,404.60-1,119,273.30-430,476.60

Finding the Fourth Proportional to 745,404.60, 1,119,273.30 and 430,476.60

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Solution

The fourth proportional to 745,404.60, 1,119,273.30 and 430,476.60 is: 646,388.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,404.60 : 1,119,273.30 = 430,476.60 : x
  2. Step 2: Convert to fraction form
    745,404.60/1,119,273.30 = 430,476.60/x
  3. Step 3: Cross multiply
    745,404.60x = 1,119,273.30 × 430,476.60
  4. Step 4: Simplify right side
    745,404.60x = 481,820,964,654.78
  5. Step 5: Solve for x
    x = 481,820,964,654.78/745,404.60
  6. Step 6: Final answer
    x = 646,388.50

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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.