Home / 687,264.72-1,030,482.75-308,116.92

Finding the Fourth Proportional to 687,264.72, 1,030,482.75 and 308,116.92

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Solution

The fourth proportional to 687,264.72, 1,030,482.75 and 308,116.92 is: 461,989.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,264.72 : 1,030,482.75 = 308,116.92 : x
  2. Step 2: Convert to fraction form
    687,264.72/1,030,482.75 = 308,116.92/x
  3. Step 3: Cross multiply
    687,264.72x = 1,030,482.75 × 308,116.92
  4. Step 4: Simplify right side
    687,264.72x = 317,509,171,043.13
  5. Step 5: Solve for x
    x = 317,509,171,043.13/687,264.72
  6. Step 6: Final answer
    x = 461,989.63

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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.