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Finding the Fourth Proportional to 642,647.52, 958,225.77 and 624,991.59

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Solution

The fourth proportional to 642,647.52, 958,225.77 and 624,991.59 is: 931,899.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,647.52 : 958,225.77 = 624,991.59 : x
  2. Step 2: Convert to fraction form
    642,647.52/958,225.77 = 624,991.59/x
  3. Step 3: Cross multiply
    642,647.52x = 958,225.77 × 624,991.59
  4. Step 4: Simplify right side
    642,647.52x = 598,883,047,571.27
  5. Step 5: Solve for x
    x = 598,883,047,571.27/642,647.52
  6. Step 6: Final answer
    x = 931,899.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.