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Finding the Fourth Proportional to 714,750.66, 985,697.10 and 485,650.80

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Solution

The fourth proportional to 714,750.66, 985,697.10 and 485,650.80 is: 669,750.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,750.66 : 985,697.10 = 485,650.80 : x
  2. Step 2: Convert to fraction form
    714,750.66/985,697.10 = 485,650.80/x
  3. Step 3: Cross multiply
    714,750.66x = 985,697.10 × 485,650.80
  4. Step 4: Simplify right side
    714,750.66x = 478,704,585,172.68
  5. Step 5: Solve for x
    x = 478,704,585,172.68/714,750.66
  6. Step 6: Final answer
    x = 669,750.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.