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Finding the Fourth Proportional to 506,329.64, 698,748.90 and 279,983.24

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Solution

The fourth proportional to 506,329.64, 698,748.90 and 279,983.24 is: 386,384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,329.64 : 698,748.90 = 279,983.24 : x
  2. Step 2: Convert to fraction form
    506,329.64/698,748.90 = 279,983.24/x
  3. Step 3: Cross multiply
    506,329.64x = 698,748.90 × 279,983.24
  4. Step 4: Simplify right side
    506,329.64x = 195,637,980,968.44
  5. Step 5: Solve for x
    x = 195,637,980,968.44/506,329.64
  6. Step 6: Final answer
    x = 386,384.61

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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.