Home / 745,145.81-1,028,435.42-439,204.34

Finding the Fourth Proportional to 745,145.81, 1,028,435.42 and 439,204.34

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Solution

The fourth proportional to 745,145.81, 1,028,435.42 and 439,204.34 is: 606,181.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,145.81 : 1,028,435.42 = 439,204.34 : x
  2. Step 2: Convert to fraction form
    745,145.81/1,028,435.42 = 439,204.34/x
  3. Step 3: Cross multiply
    745,145.81x = 1,028,435.42 × 439,204.34
  4. Step 4: Simplify right side
    745,145.81x = 451,693,294,731.55
  5. Step 5: Solve for x
    x = 451,693,294,731.55/745,145.81
  6. Step 6: Final answer
    x = 606,181.08

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Double scale
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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.