Home / 870,280.20-1,305,420.30-551,415.60

Finding the Fourth Proportional to 870,280.20, 1,305,420.30 and 551,415.60

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Solution

The fourth proportional to 870,280.20, 1,305,420.30 and 551,415.60 is: 827,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,280.20 : 1,305,420.30 = 551,415.60 : x
  2. Step 2: Convert to fraction form
    870,280.20/1,305,420.30 = 551,415.60/x
  3. Step 3: Cross multiply
    870,280.20x = 1,305,420.30 × 551,415.60
  4. Step 4: Simplify right side
    870,280.20x = 719,829,117,976.68
  5. Step 5: Solve for x
    x = 719,829,117,976.68/870,280.20
  6. Step 6: Final answer
    x = 827,123.40

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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.