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Finding the Fourth Proportional to 556,376.40, 834,370.20 and 290,048.40

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Solution

The fourth proportional to 556,376.40, 834,370.20 and 290,048.40 is: 434,971.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,376.40 : 834,370.20 = 290,048.40 : x
  2. Step 2: Convert to fraction form
    556,376.40/834,370.20 = 290,048.40/x
  3. Step 3: Cross multiply
    556,376.40x = 834,370.20 × 290,048.40
  4. Step 4: Simplify right side
    556,376.40x = 242,007,741,517.68
  5. Step 5: Solve for x
    x = 242,007,741,517.68/556,376.40
  6. Step 6: Final answer
    x = 434,971.26

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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.