Home / 548,631.76-757,541.32-421,105.36

Finding the Fourth Proportional to 548,631.76, 757,541.32 and 421,105.36

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Solution

The fourth proportional to 548,631.76, 757,541.32 and 421,105.36 is: 581,455.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,631.76 : 757,541.32 = 421,105.36 : x
  2. Step 2: Convert to fraction form
    548,631.76/757,541.32 = 421,105.36/x
  3. Step 3: Cross multiply
    548,631.76x = 757,541.32 × 421,105.36
  4. Step 4: Simplify right side
    548,631.76x = 319,004,710,273.48
  5. Step 5: Solve for x
    x = 319,004,710,273.48/548,631.76
  6. Step 6: Final answer
    x = 581,455.06

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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.