Home / 709,428.81-1,063,219.10-288,212.25

Finding the Fourth Proportional to 709,428.81, 1,063,219.10 and 288,212.25

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Solution

The fourth proportional to 709,428.81, 1,063,219.10 and 288,212.25 is: 431,942.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,428.81 : 1,063,219.10 = 288,212.25 : x
  2. Step 2: Convert to fraction form
    709,428.81/1,063,219.10 = 288,212.25/x
  3. Step 3: Cross multiply
    709,428.81x = 1,063,219.10 × 288,212.25
  4. Step 4: Simplify right side
    709,428.81x = 306,432,767,612.91
  5. Step 5: Solve for x
    x = 306,432,767,612.91/709,428.81
  6. Step 6: Final answer
    x = 431,942.94

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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.