Home / 878,528.63-1,317,534.43-398,478.71

Finding the Fourth Proportional to 878,528.63, 1,317,534.43 and 398,478.71

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Solution

The fourth proportional to 878,528.63, 1,317,534.43 and 398,478.71 is: 597,600.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,528.63 : 1,317,534.43 = 398,478.71 : x
  2. Step 2: Convert to fraction form
    878,528.63/1,317,534.43 = 398,478.71/x
  3. Step 3: Cross multiply
    878,528.63x = 1,317,534.43 × 398,478.71
  4. Step 4: Simplify right side
    878,528.63x = 525,009,420,046.99
  5. Step 5: Solve for x
    x = 525,009,420,046.99/878,528.63
  6. Step 6: Final answer
    x = 597,600.81

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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.