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Finding the Fourth Proportional to 521,336.76, 718,831.77 and 417,888.24

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Solution

The fourth proportional to 521,336.76, 718,831.77 and 417,888.24 is: 576,194.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,336.76 : 718,831.77 = 417,888.24 : x
  2. Step 2: Convert to fraction form
    521,336.76/718,831.77 = 417,888.24/x
  3. Step 3: Cross multiply
    521,336.76x = 718,831.77 × 417,888.24
  4. Step 4: Simplify right side
    521,336.76x = 300,391,340,980.40
  5. Step 5: Solve for x
    x = 300,391,340,980.40/521,336.76
  6. Step 6: Final answer
    x = 576,194.44

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Double scale
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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.