Home / 813,114.48-1,219,451.40-339,700.80

Finding the Fourth Proportional to 813,114.48, 1,219,451.40 and 339,700.80

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Solution

The fourth proportional to 813,114.48, 1,219,451.40 and 339,700.80 is: 509,459.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,114.48 : 1,219,451.40 = 339,700.80 : x
  2. Step 2: Convert to fraction form
    813,114.48/1,219,451.40 = 339,700.80/x
  3. Step 3: Cross multiply
    813,114.48x = 1,219,451.40 × 339,700.80
  4. Step 4: Simplify right side
    813,114.48x = 414,248,616,141.12
  5. Step 5: Solve for x
    x = 414,248,616,141.12/813,114.48
  6. Step 6: Final answer
    x = 509,459.16

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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.