Home / 561,621.02-774,929.50-319,898.30

Finding the Fourth Proportional to 561,621.02, 774,929.50 and 319,898.30

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Solution

The fourth proportional to 561,621.02, 774,929.50 and 319,898.30 is: 441,398.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,621.02 : 774,929.50 = 319,898.30 : x
  2. Step 2: Convert to fraction form
    561,621.02/774,929.50 = 319,898.30/x
  3. Step 3: Cross multiply
    561,621.02x = 774,929.50 × 319,898.30
  4. Step 4: Simplify right side
    561,621.02x = 247,898,624,995.46
  5. Step 5: Solve for x
    x = 247,898,624,995.46/561,621.02
  6. Step 6: Final answer
    x = 441,398.41

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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.