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Finding the Fourth Proportional to 506,342.36, 698,738.64 and 279,980.12

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Solution

The fourth proportional to 506,342.36, 698,738.64 and 279,980.12 is: 386,364.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,342.36 : 698,738.64 = 279,980.12 : x
  2. Step 2: Convert to fraction form
    506,342.36/698,738.64 = 279,980.12/x
  3. Step 3: Cross multiply
    506,342.36x = 698,738.64 × 279,980.12
  4. Step 4: Simplify right side
    506,342.36x = 195,632,928,972.76
  5. Step 5: Solve for x
    x = 195,632,928,972.76/506,342.36
  6. Step 6: Final answer
    x = 386,364.93

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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.