Home / 1,315,621.60-1,973,432.40-685,765.60

Finding the Fourth Proportional to 1,315,621.60, 1,973,432.40 and 685,765.60

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Solution

The fourth proportional to 1,315,621.60, 1,973,432.40 and 685,765.60 is: 1,028,648.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,621.60 : 1,973,432.40 = 685,765.60 : x
  2. Step 2: Convert to fraction form
    1,315,621.60/1,973,432.40 = 685,765.60/x
  3. Step 3: Cross multiply
    1,315,621.60x = 1,973,432.40 × 685,765.60
  4. Step 4: Simplify right side
    1,315,621.60x = 1,353,312,053,845.44
  5. Step 5: Solve for x
    x = 1,353,312,053,845.44/1,315,621.60
  6. Step 6: Final answer
    x = 1,028,648.40

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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.