Home / 1,087,253.40-1,630,880.10-685,720.20

Finding the Fourth Proportional to 1,087,253.40, 1,630,880.10 and 685,720.20

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Solution

The fourth proportional to 1,087,253.40, 1,630,880.10 and 685,720.20 is: 1,028,580.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,253.40 : 1,630,880.10 = 685,720.20 : x
  2. Step 2: Convert to fraction form
    1,087,253.40/1,630,880.10 = 685,720.20/x
  3. Step 3: Cross multiply
    1,087,253.40x = 1,630,880.10 × 685,720.20
  4. Step 4: Simplify right side
    1,087,253.40x = 1,118,327,428,348.02
  5. Step 5: Solve for x
    x = 1,118,327,428,348.02/1,087,253.40
  6. Step 6: Final answer
    x = 1,028,580.30

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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.