Home / 719,072.88-992,319.36-396,782.72

Finding the Fourth Proportional to 719,072.88, 992,319.36 and 396,782.72

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Solution

The fourth proportional to 719,072.88, 992,319.36 and 396,782.72 is: 547,559.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,072.88 : 992,319.36 = 396,782.72 : x
  2. Step 2: Convert to fraction form
    719,072.88/992,319.36 = 396,782.72/x
  3. Step 3: Cross multiply
    719,072.88x = 992,319.36 × 396,782.72
  4. Step 4: Simplify right side
    719,072.88x = 393,735,174,769.46
  5. Step 5: Solve for x
    x = 393,735,174,769.46/719,072.88
  6. Step 6: Final answer
    x = 547,559.48

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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.