Home / 605,217.93-834,920.34-390,427.20

Finding the Fourth Proportional to 605,217.93, 834,920.34 and 390,427.20

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Solution

The fourth proportional to 605,217.93, 834,920.34 and 390,427.20 is: 538,608.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,217.93 : 834,920.34 = 390,427.20 : x
  2. Step 2: Convert to fraction form
    605,217.93/834,920.34 = 390,427.20/x
  3. Step 3: Cross multiply
    605,217.93x = 834,920.34 × 390,427.20
  4. Step 4: Simplify right side
    605,217.93x = 325,975,610,569.25
  5. Step 5: Solve for x
    x = 325,975,610,569.25/605,217.93
  6. Step 6: Final answer
    x = 538,608.65

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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.