Home / 688,347.86-949,914.34-386,535.38

Finding the Fourth Proportional to 688,347.86, 949,914.34 and 386,535.38

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Solution

The fourth proportional to 688,347.86, 949,914.34 and 386,535.38 is: 533,415.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,347.86 : 949,914.34 = 386,535.38 : x
  2. Step 2: Convert to fraction form
    688,347.86/949,914.34 = 386,535.38/x
  3. Step 3: Cross multiply
    688,347.86x = 949,914.34 × 386,535.38
  4. Step 4: Simplify right side
    688,347.86x = 367,175,494,663.44
  5. Step 5: Solve for x
    x = 367,175,494,663.44/688,347.86
  6. Step 6: Final answer
    x = 533,415.62

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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.