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Finding the Fourth Proportional to 970,812.60, 1,456,218.90 and 545,659.80

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Solution

The fourth proportional to 970,812.60, 1,456,218.90 and 545,659.80 is: 818,489.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,812.60 : 1,456,218.90 = 545,659.80 : x
  2. Step 2: Convert to fraction form
    970,812.60/1,456,218.90 = 545,659.80/x
  3. Step 3: Cross multiply
    970,812.60x = 1,456,218.90 × 545,659.80
  4. Step 4: Simplify right side
    970,812.60x = 794,600,113,730.22
  5. Step 5: Solve for x
    x = 794,600,113,730.22/970,812.60
  6. Step 6: Final answer
    x = 818,489.70

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Similar ratio
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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.