Home / 1,331,280.40-1,996,920.60-384,746.80

Finding the Fourth Proportional to 1,331,280.40, 1,996,920.60 and 384,746.80

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Solution

The fourth proportional to 1,331,280.40, 1,996,920.60 and 384,746.80 is: 577,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,280.40 : 1,996,920.60 = 384,746.80 : x
  2. Step 2: Convert to fraction form
    1,331,280.40/1,996,920.60 = 384,746.80/x
  3. Step 3: Cross multiply
    1,331,280.40x = 1,996,920.60 × 384,746.80
  4. Step 4: Simplify right side
    1,331,280.40x = 768,308,810,704.08
  5. Step 5: Solve for x
    x = 768,308,810,704.08/1,331,280.40
  6. Step 6: Final answer
    x = 577,120.20

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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.