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Finding the Fourth Proportional to 492,705.60, 739,058.40 and 256,509.60

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Solution

The fourth proportional to 492,705.60, 739,058.40 and 256,509.60 is: 384,764.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,705.60 : 739,058.40 = 256,509.60 : x
  2. Step 2: Convert to fraction form
    492,705.60/739,058.40 = 256,509.60/x
  3. Step 3: Cross multiply
    492,705.60x = 739,058.40 × 256,509.60
  4. Step 4: Simplify right side
    492,705.60x = 189,575,574,560.64
  5. Step 5: Solve for x
    x = 189,575,574,560.64/492,705.60
  6. Step 6: Final answer
    x = 384,764.40

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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.