Home / 991,738.40-1,487,607.60-613,824.80

Finding the Fourth Proportional to 991,738.40, 1,487,607.60 and 613,824.80

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Solution

The fourth proportional to 991,738.40, 1,487,607.60 and 613,824.80 is: 920,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,738.40 : 1,487,607.60 = 613,824.80 : x
  2. Step 2: Convert to fraction form
    991,738.40/1,487,607.60 = 613,824.80/x
  3. Step 3: Cross multiply
    991,738.40x = 1,487,607.60 × 613,824.80
  4. Step 4: Simplify right side
    991,738.40x = 913,130,437,548.48
  5. Step 5: Solve for x
    x = 913,130,437,548.48/991,738.40
  6. Step 6: Final answer
    x = 920,737.20

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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.