Home / 879,013.17-1,212,980.81-491,762.43

Finding the Fourth Proportional to 879,013.17, 1,212,980.81 and 491,762.43

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Solution

The fourth proportional to 879,013.17, 1,212,980.81 and 491,762.43 is: 678,600.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,013.17 : 1,212,980.81 = 491,762.43 : x
  2. Step 2: Convert to fraction form
    879,013.17/1,212,980.81 = 491,762.43/x
  3. Step 3: Cross multiply
    879,013.17x = 1,212,980.81 × 491,762.43
  4. Step 4: Simplify right side
    879,013.17x = 596,498,388,210.16
  5. Step 5: Solve for x
    x = 596,498,388,210.16/879,013.17
  6. Step 6: Final answer
    x = 678,600.06

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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.