Home / 1,387,002.40-2,080,503.60-489,457.60

Finding the Fourth Proportional to 1,387,002.40, 2,080,503.60 and 489,457.60

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Solution

The fourth proportional to 1,387,002.40, 2,080,503.60 and 489,457.60 is: 734,186.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,002.40 : 2,080,503.60 = 489,457.60 : x
  2. Step 2: Convert to fraction form
    1,387,002.40/2,080,503.60 = 489,457.60/x
  3. Step 3: Cross multiply
    1,387,002.40x = 2,080,503.60 × 489,457.60
  4. Step 4: Simplify right side
    1,387,002.40x = 1,018,318,298,847.36
  5. Step 5: Solve for x
    x = 1,018,318,298,847.36/1,387,002.40
  6. Step 6: Final answer
    x = 734,186.40

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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.