Home / 390,914.56-539,184-358,753.04

Finding the Fourth Proportional to 390,914.56, 539,184 and 358,753.04

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Solution

The fourth proportional to 390,914.56, 539,184 and 358,753.04 is: 494,823.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,914.56 : 539,184 = 358,753.04 : x
  2. Step 2: Convert to fraction form
    390,914.56/539,184 = 358,753.04/x
  3. Step 3: Cross multiply
    390,914.56x = 539,184 × 358,753.04
  4. Step 4: Simplify right side
    390,914.56x = 193,433,899,119.36
  5. Step 5: Solve for x
    x = 193,433,899,119.36/390,914.56
  6. Step 6: Final answer
    x = 494,823.98

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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.