Home / 1,336,689.81-2,005,001.42-390,068.73

Finding the Fourth Proportional to 1,336,689.81, 2,005,001.42 and 390,068.73

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Solution

The fourth proportional to 1,336,689.81, 2,005,001.42 and 390,068.73 is: 585,093.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,689.81 : 2,005,001.42 = 390,068.73 : x
  2. Step 2: Convert to fraction form
    1,336,689.81/2,005,001.42 = 390,068.73/x
  3. Step 3: Cross multiply
    1,336,689.81x = 2,005,001.42 × 390,068.73
  4. Step 4: Simplify right side
    1,336,689.81x = 782,088,355,597.25
  5. Step 5: Solve for x
    x = 782,088,355,597.25/1,336,689.81
  6. Step 6: Final answer
    x = 585,093.38

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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.