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Finding the Fourth Proportional to 538,554.20, 807,831.30 and 328,602.20

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Solution

The fourth proportional to 538,554.20, 807,831.30 and 328,602.20 is: 492,903.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,554.20 : 807,831.30 = 328,602.20 : x
  2. Step 2: Convert to fraction form
    538,554.20/807,831.30 = 328,602.20/x
  3. Step 3: Cross multiply
    538,554.20x = 807,831.30 × 328,602.20
  4. Step 4: Simplify right side
    538,554.20x = 265,455,142,408.86
  5. Step 5: Solve for x
    x = 265,455,142,408.86/538,554.20
  6. Step 6: Final answer
    x = 492,903.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.