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Finding the Fourth Proportional to 505,280.40, 757,920.60 and 345,848.10

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Solution

The fourth proportional to 505,280.40, 757,920.60 and 345,848.10 is: 518,772.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,280.40 : 757,920.60 = 345,848.10 : x
  2. Step 2: Convert to fraction form
    505,280.40/757,920.60 = 345,848.10/x
  3. Step 3: Cross multiply
    505,280.40x = 757,920.60 × 345,848.10
  4. Step 4: Simplify right side
    505,280.40x = 262,125,399,460.86
  5. Step 5: Solve for x
    x = 262,125,399,460.86/505,280.40
  6. Step 6: Final answer
    x = 518,772.15

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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.