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Finding the Fourth Proportional to 420,235.76, 627,076.01 and 374,945.76

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Solution

The fourth proportional to 420,235.76, 627,076.01 and 374,945.76 is: 559,494.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,235.76 : 627,076.01 = 374,945.76 : x
  2. Step 2: Convert to fraction form
    420,235.76/627,076.01 = 374,945.76/x
  3. Step 3: Cross multiply
    420,235.76x = 627,076.01 × 374,945.76
  4. Step 4: Simplify right side
    420,235.76x = 235,119,492,084.58
  5. Step 5: Solve for x
    x = 235,119,492,084.58/420,235.76
  6. Step 6: Final answer
    x = 559,494.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.