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Finding the Fourth Proportional to 394,513.20, 590,603.40 and 371,444.40

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Solution

The fourth proportional to 394,513.20, 590,603.40 and 371,444.40 is: 556,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,513.20 : 590,603.40 = 371,444.40 : x
  2. Step 2: Convert to fraction form
    394,513.20/590,603.40 = 371,444.40/x
  3. Step 3: Cross multiply
    394,513.20x = 590,603.40 × 371,444.40
  4. Step 4: Simplify right side
    394,513.20x = 219,376,325,550.96
  5. Step 5: Solve for x
    x = 219,376,325,550.96/394,513.20
  6. Step 6: Final answer
    x = 556,068.40

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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.