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Finding the Fourth Proportional to 629,482.76, 868,659.05 and 357,549.81

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Solution

The fourth proportional to 629,482.76, 868,659.05 and 357,549.81 is: 493,403.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,482.76 : 868,659.05 = 357,549.81 : x
  2. Step 2: Convert to fraction form
    629,482.76/868,659.05 = 357,549.81/x
  3. Step 3: Cross multiply
    629,482.76x = 868,659.05 × 357,549.81
  4. Step 4: Simplify right side
    629,482.76x = 310,588,878,282.28
  5. Step 5: Solve for x
    x = 310,588,878,282.28/629,482.76
  6. Step 6: Final answer
    x = 493,403.31

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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.