Home / 669,751.20-1,002,877.20-638,258.40

Finding the Fourth Proportional to 669,751.20, 1,002,877.20 and 638,258.40

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Solution

The fourth proportional to 669,751.20, 1,002,877.20 and 638,258.40 is: 955,720.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,751.20 : 1,002,877.20 = 638,258.40 : x
  2. Step 2: Convert to fraction form
    669,751.20/1,002,877.20 = 638,258.40/x
  3. Step 3: Cross multiply
    669,751.20x = 1,002,877.20 × 638,258.40
  4. Step 4: Simplify right side
    669,751.20x = 640,094,797,068.48
  5. Step 5: Solve for x
    x = 640,094,797,068.48/669,751.20
  6. Step 6: Final answer
    x = 955,720.27

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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.