Home / 810,005.20-1,215,007.80-766,702.60

Finding the Fourth Proportional to 810,005.20, 1,215,007.80 and 766,702.60

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Solution

The fourth proportional to 810,005.20, 1,215,007.80 and 766,702.60 is: 1,150,053.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,005.20 : 1,215,007.80 = 766,702.60 : x
  2. Step 2: Convert to fraction form
    810,005.20/1,215,007.80 = 766,702.60/x
  3. Step 3: Cross multiply
    810,005.20x = 1,215,007.80 × 766,702.60
  4. Step 4: Simplify right side
    810,005.20x = 931,549,639,280.28
  5. Step 5: Solve for x
    x = 931,549,639,280.28/810,005.20
  6. Step 6: Final answer
    x = 1,150,053.90

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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.