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Finding the Fourth Proportional to 525,086.40, 786,317.40 and 346,627.20

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Solution

The fourth proportional to 525,086.40, 786,317.40 and 346,627.20 is: 519,074.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,086.40 : 786,317.40 = 346,627.20 : x
  2. Step 2: Convert to fraction form
    525,086.40/786,317.40 = 346,627.20/x
  3. Step 3: Cross multiply
    525,086.40x = 786,317.40 × 346,627.20
  4. Step 4: Simplify right side
    525,086.40x = 272,558,998,673.28
  5. Step 5: Solve for x
    x = 272,558,998,673.28/525,086.40
  6. Step 6: Final answer
    x = 519,074.57

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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.