Home / 785,643.66-1,178,982.27-430,906.50

Finding the Fourth Proportional to 785,643.66, 1,178,982.27 and 430,906.50

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Solution

The fourth proportional to 785,643.66, 1,178,982.27 and 430,906.50 is: 646,643.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,643.66 : 1,178,982.27 = 430,906.50 : x
  2. Step 2: Convert to fraction form
    785,643.66/1,178,982.27 = 430,906.50/x
  3. Step 3: Cross multiply
    785,643.66x = 1,178,982.27 × 430,906.50
  4. Step 4: Simplify right side
    785,643.66x = 508,031,123,527.76
  5. Step 5: Solve for x
    x = 508,031,123,527.76/785,643.66
  6. Step 6: Final answer
    x = 646,643.19

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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.