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Finding the Fourth Proportional to 670,349.86, 925,078.93 and 380,016.21

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Solution

The fourth proportional to 670,349.86, 925,078.93 and 380,016.21 is: 524,420.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,349.86 : 925,078.93 = 380,016.21 : x
  2. Step 2: Convert to fraction form
    670,349.86/925,078.93 = 380,016.21/x
  3. Step 3: Cross multiply
    670,349.86x = 925,078.93 × 380,016.21
  4. Step 4: Simplify right side
    670,349.86x = 351,544,988,929.46
  5. Step 5: Solve for x
    x = 351,544,988,929.46/670,349.86
  6. Step 6: Final answer
    x = 524,420.17

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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.