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Finding the Fourth Proportional to 613,271.70, 919,907.55 and 558,159.30

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Solution

The fourth proportional to 613,271.70, 919,907.55 and 558,159.30 is: 837,238.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,271.70 : 919,907.55 = 558,159.30 : x
  2. Step 2: Convert to fraction form
    613,271.70/919,907.55 = 558,159.30/x
  3. Step 3: Cross multiply
    613,271.70x = 919,907.55 × 558,159.30
  4. Step 4: Simplify right side
    613,271.70x = 513,454,954,172.72
  5. Step 5: Solve for x
    x = 513,454,954,172.72/613,271.70
  6. Step 6: Final answer
    x = 837,238.95

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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.