Home / 918,851.22-1,378,423.84-319,982.58

Finding the Fourth Proportional to 918,851.22, 1,378,423.84 and 319,982.58

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Solution

The fourth proportional to 918,851.22, 1,378,423.84 and 319,982.58 is: 480,025.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,851.22 : 1,378,423.84 = 319,982.58 : x
  2. Step 2: Convert to fraction form
    918,851.22/1,378,423.84 = 319,982.58/x
  3. Step 3: Cross multiply
    918,851.22x = 1,378,423.84 × 319,982.58
  4. Step 4: Simplify right side
    918,851.22x = 441,071,616,656.71
  5. Step 5: Solve for x
    x = 441,071,616,656.71/918,851.22
  6. Step 6: Final answer
    x = 480,025.07

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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.