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Finding the Fourth Proportional to 565,134.35, 779,903.30 and 310,490.87

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Solution

The fourth proportional to 565,134.35, 779,903.30 and 310,490.87 is: 428,487.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,134.35 : 779,903.30 = 310,490.87 : x
  2. Step 2: Convert to fraction form
    565,134.35/779,903.30 = 310,490.87/x
  3. Step 3: Cross multiply
    565,134.35x = 779,903.30 × 310,490.87
  4. Step 4: Simplify right side
    565,134.35x = 242,152,851,009.58
  5. Step 5: Solve for x
    x = 242,152,851,009.58/565,134.35
  6. Step 6: Final answer
    x = 428,487.23

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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.