Home / 777,398.45-1,072,762.66-428,523.58

Finding the Fourth Proportional to 777,398.45, 1,072,762.66 and 428,523.58

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Solution

The fourth proportional to 777,398.45, 1,072,762.66 and 428,523.58 is: 591,336.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,398.45 : 1,072,762.66 = 428,523.58 : x
  2. Step 2: Convert to fraction form
    777,398.45/1,072,762.66 = 428,523.58/x
  3. Step 3: Cross multiply
    777,398.45x = 1,072,762.66 × 428,523.58
  4. Step 4: Simplify right side
    777,398.45x = 459,704,088,985.40
  5. Step 5: Solve for x
    x = 459,704,088,985.40/777,398.45
  6. Step 6: Final answer
    x = 591,336.52

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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.