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Finding the Fourth Proportional to 565,376.40, 780,213.60 and 307,248.12

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Solution

The fourth proportional to 565,376.40, 780,213.60 and 307,248.12 is: 423,999.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,376.40 : 780,213.60 = 307,248.12 : x
  2. Step 2: Convert to fraction form
    565,376.40/780,213.60 = 307,248.12/x
  3. Step 3: Cross multiply
    565,376.40x = 780,213.60 × 307,248.12
  4. Step 4: Simplify right side
    565,376.40x = 239,719,161,798.43
  5. Step 5: Solve for x
    x = 239,719,161,798.43/565,376.40
  6. Step 6: Final answer
    x = 423,999.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.