Home / 2,118,701.10-3,178,051.65-1,205,409.90

Finding the Fourth Proportional to 2,118,701.10, 3,178,051.65 and 1,205,409.90

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Solution

The fourth proportional to 2,118,701.10, 3,178,051.65 and 1,205,409.90 is: 1,808,114.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118,701.10 : 3,178,051.65 = 1,205,409.90 : x
  2. Step 2: Convert to fraction form
    2,118,701.10/3,178,051.65 = 1,205,409.90/x
  3. Step 3: Cross multiply
    2,118,701.10x = 3,178,051.65 × 1,205,409.90
  4. Step 4: Simplify right side
    2,118,701.10x = 3,830,854,921,621.33
  5. Step 5: Solve for x
    x = 3,830,854,921,621.33/2,118,701.10
  6. Step 6: Final answer
    x = 1,808,114.85

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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.