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Finding the Fourth Proportional to 985,315.50, 1,359,775.72 and 622,607

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Solution

The fourth proportional to 985,315.50, 1,359,775.72 and 622,607 is: 859,223.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,315.50 : 1,359,775.72 = 622,607 : x
  2. Step 2: Convert to fraction form
    985,315.50/1,359,775.72 = 622,607/x
  3. Step 3: Cross multiply
    985,315.50x = 1,359,775.72 × 622,607
  4. Step 4: Simplify right side
    985,315.50x = 846,605,881,702.04
  5. Step 5: Solve for x
    x = 846,605,881,702.04/985,315.50
  6. Step 6: Final answer
    x = 859,223.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.