Home / 685,742.40-1,025,697.60-615,175.20

Finding the Fourth Proportional to 685,742.40, 1,025,697.60 and 615,175.20

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Solution

The fourth proportional to 685,742.40, 1,025,697.60 and 615,175.20 is: 920,146.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,742.40 : 1,025,697.60 = 615,175.20 : x
  2. Step 2: Convert to fraction form
    685,742.40/1,025,697.60 = 615,175.20/x
  3. Step 3: Cross multiply
    685,742.40x = 1,025,697.60 × 615,175.20
  4. Step 4: Simplify right side
    685,742.40x = 630,983,726,219.52
  5. Step 5: Solve for x
    x = 630,983,726,219.52/685,742.40
  6. Step 6: Final answer
    x = 920,146.87

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1.5x scale

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.