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Finding the Fourth Proportional to 506,382.60, 698,706.90 and 279,984.36

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Solution

The fourth proportional to 506,382.60, 698,706.90 and 279,984.36 is: 386,322.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,382.60 : 698,706.90 = 279,984.36 : x
  2. Step 2: Convert to fraction form
    506,382.60/698,706.90 = 279,984.36/x
  3. Step 3: Cross multiply
    506,382.60x = 698,706.90 × 279,984.36
  4. Step 4: Simplify right side
    506,382.60x = 195,627,004,224.08
  5. Step 5: Solve for x
    x = 195,627,004,224.08/506,382.60
  6. Step 6: Final answer
    x = 386,322.52

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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.