Home / 686,065.95-1,028,434.72-306,772.11

Finding the Fourth Proportional to 686,065.95, 1,028,434.72 and 306,772.11

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Solution

The fourth proportional to 686,065.95, 1,028,434.72 and 306,772.11 is: 459,861.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,065.95 : 1,028,434.72 = 306,772.11 : x
  2. Step 2: Convert to fraction form
    686,065.95/1,028,434.72 = 306,772.11/x
  3. Step 3: Cross multiply
    686,065.95x = 1,028,434.72 × 306,772.11
  4. Step 4: Simplify right side
    686,065.95x = 315,495,089,051.66
  5. Step 5: Solve for x
    x = 315,495,089,051.66/686,065.95
  6. Step 6: Final answer
    x = 459,861.17

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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.