Home / 715,455.04-987,263.76-393,161.44

Finding the Fourth Proportional to 715,455.04, 987,263.76 and 393,161.44

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Solution

The fourth proportional to 715,455.04, 987,263.76 and 393,161.44 is: 542,527.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,455.04 : 987,263.76 = 393,161.44 : x
  2. Step 2: Convert to fraction form
    715,455.04/987,263.76 = 393,161.44/x
  3. Step 3: Cross multiply
    715,455.04x = 987,263.76 × 393,161.44
  4. Step 4: Simplify right side
    715,455.04x = 388,154,041,541.41
  5. Step 5: Solve for x
    x = 388,154,041,541.41/715,455.04
  6. Step 6: Final answer
    x = 542,527.51

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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.