Home / 459,110.80-688,666.20-319,142.80

Finding the Fourth Proportional to 459,110.80, 688,666.20 and 319,142.80

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Solution

The fourth proportional to 459,110.80, 688,666.20 and 319,142.80 is: 478,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,110.80 : 688,666.20 = 319,142.80 : x
  2. Step 2: Convert to fraction form
    459,110.80/688,666.20 = 319,142.80/x
  3. Step 3: Cross multiply
    459,110.80x = 688,666.20 × 319,142.80
  4. Step 4: Simplify right side
    459,110.80x = 219,782,859,333.36
  5. Step 5: Solve for x
    x = 219,782,859,333.36/459,110.80
  6. Step 6: Final answer
    x = 478,714.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.