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Finding the Fourth Proportional to 891,898.80, 1,230,814.08 and 483,990.24

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Solution

The fourth proportional to 891,898.80, 1,230,814.08 and 483,990.24 is: 667,903.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,898.80 : 1,230,814.08 = 483,990.24 : x
  2. Step 2: Convert to fraction form
    891,898.80/1,230,814.08 = 483,990.24/x
  3. Step 3: Cross multiply
    891,898.80x = 1,230,814.08 × 483,990.24
  4. Step 4: Simplify right side
    891,898.80x = 595,702,001,974.58
  5. Step 5: Solve for x
    x = 595,702,001,974.58/891,898.80
  6. Step 6: Final answer
    x = 667,903.13

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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.