Home / 909,711.40-1,361,942.70-555,417.40

Finding the Fourth Proportional to 909,711.40, 1,361,942.70 and 555,417.40

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Solution

The fourth proportional to 909,711.40, 1,361,942.70 and 555,417.40 is: 831,523.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,711.40 : 1,361,942.70 = 555,417.40 : x
  2. Step 2: Convert to fraction form
    909,711.40/1,361,942.70 = 555,417.40/x
  3. Step 3: Cross multiply
    909,711.40x = 1,361,942.70 × 555,417.40
  4. Step 4: Simplify right side
    909,711.40x = 756,446,673,382.98
  5. Step 5: Solve for x
    x = 756,446,673,382.98/909,711.40
  6. Step 6: Final answer
    x = 831,523.79

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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.