Home / 1,339,780.60-2,009,670.90-1,213,809.40

Finding the Fourth Proportional to 1,339,780.60, 2,009,670.90 and 1,213,809.40

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Solution

The fourth proportional to 1,339,780.60, 2,009,670.90 and 1,213,809.40 is: 1,820,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,780.60 : 2,009,670.90 = 1,213,809.40 : x
  2. Step 2: Convert to fraction form
    1,339,780.60/2,009,670.90 = 1,213,809.40/x
  3. Step 3: Cross multiply
    1,339,780.60x = 2,009,670.90 × 1,213,809.40
  4. Step 4: Simplify right side
    1,339,780.60x = 2,439,357,429,326.46
  5. Step 5: Solve for x
    x = 2,439,357,429,326.46/1,339,780.60
  6. Step 6: Final answer
    x = 1,820,714.10

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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.