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Finding the Fourth Proportional to 867,118.40, 1,300,612.80 and 361,548.80

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Solution

The fourth proportional to 867,118.40, 1,300,612.80 and 361,548.80 is: 542,296.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,118.40 : 1,300,612.80 = 361,548.80 : x
  2. Step 2: Convert to fraction form
    867,118.40/1,300,612.80 = 361,548.80/x
  3. Step 3: Cross multiply
    867,118.40x = 1,300,612.80 × 361,548.80
  4. Step 4: Simplify right side
    867,118.40x = 470,234,997,104.64
  5. Step 5: Solve for x
    x = 470,234,997,104.64/867,118.40
  6. Step 6: Final answer
    x = 542,296.18

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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.