Home / 877,812.89-1,316,719.34-212,964.89

Finding the Fourth Proportional to 877,812.89, 1,316,719.34 and 212,964.89

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Solution

The fourth proportional to 877,812.89, 1,316,719.34 and 212,964.89 is: 319,447.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,812.89 : 1,316,719.34 = 212,964.89 : x
  2. Step 2: Convert to fraction form
    877,812.89/1,316,719.34 = 212,964.89/x
  3. Step 3: Cross multiply
    877,812.89x = 1,316,719.34 × 212,964.89
  4. Step 4: Simplify right side
    877,812.89x = 280,414,989,361.75
  5. Step 5: Solve for x
    x = 280,414,989,361.75/877,812.89
  6. Step 6: Final answer
    x = 319,447.34

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1.5x scale

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.