Home / 989,440.40-1,484,403.60-279,459.20

Finding the Fourth Proportional to 989,440.40, 1,484,403.60 and 279,459.20

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Solution

The fourth proportional to 989,440.40, 1,484,403.60 and 279,459.20 is: 419,257.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,440.40 : 1,484,403.60 = 279,459.20 : x
  2. Step 2: Convert to fraction form
    989,440.40/1,484,403.60 = 279,459.20/x
  3. Step 3: Cross multiply
    989,440.40x = 1,484,403.60 × 279,459.20
  4. Step 4: Simplify right side
    989,440.40x = 414,830,242,533.12
  5. Step 5: Solve for x
    x = 414,830,242,533.12/989,440.40
  6. Step 6: Final answer
    x = 419,257.43

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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.