Home / 688,345.40-1,032,163.56-308,940.88

Finding the Fourth Proportional to 688,345.40, 1,032,163.56 and 308,940.88

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Solution

The fourth proportional to 688,345.40, 1,032,163.56 and 308,940.88 is: 463,252.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,345.40 : 1,032,163.56 = 308,940.88 : x
  2. Step 2: Convert to fraction form
    688,345.40/1,032,163.56 = 308,940.88/x
  3. Step 3: Cross multiply
    688,345.40x = 1,032,163.56 × 308,940.88
  4. Step 4: Simplify right side
    688,345.40x = 318,877,518,530.33
  5. Step 5: Solve for x
    x = 318,877,518,530.33/688,345.40
  6. Step 6: Final answer
    x = 463,252.20

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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.