Home / 715,748.02-987,733.44-393,460.16

Finding the Fourth Proportional to 715,748.02, 987,733.44 and 393,460.16

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Solution

The fourth proportional to 715,748.02, 987,733.44 and 393,460.16 is: 542,975.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,748.02 : 987,733.44 = 393,460.16 : x
  2. Step 2: Convert to fraction form
    715,748.02/987,733.44 = 393,460.16/x
  3. Step 3: Cross multiply
    715,748.02x = 987,733.44 × 393,460.16
  4. Step 4: Simplify right side
    715,748.02x = 388,633,752,401.08
  5. Step 5: Solve for x
    x = 388,633,752,401.08/715,748.02
  6. Step 6: Final answer
    x = 542,975.66

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1.5x scale

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.