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Finding the Fourth Proportional to 520,273.56, 717,962.34 and 290,831.34

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Solution

The fourth proportional to 520,273.56, 717,962.34 and 290,831.34 is: 401,338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,273.56 : 717,962.34 = 290,831.34 : x
  2. Step 2: Convert to fraction form
    520,273.56/717,962.34 = 290,831.34/x
  3. Step 3: Cross multiply
    520,273.56x = 717,962.34 × 290,831.34
  4. Step 4: Simplify right side
    520,273.56x = 208,805,949,411.74
  5. Step 5: Solve for x
    x = 208,805,949,411.74/520,273.56
  6. Step 6: Final answer
    x = 401,338.77

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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.