Home / 1,191,121.60-1,643,746.54-647,256.09

Finding the Fourth Proportional to 1,191,121.60, 1,643,746.54 and 647,256.09

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Solution

The fourth proportional to 1,191,121.60, 1,643,746.54 and 647,256.09 is: 893,212.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,121.60 : 1,643,746.54 = 647,256.09 : x
  2. Step 2: Convert to fraction form
    1,191,121.60/1,643,746.54 = 647,256.09/x
  3. Step 3: Cross multiply
    1,191,121.60x = 1,643,746.54 × 647,256.09
  4. Step 4: Simplify right side
    1,191,121.60x = 1,063,924,956,813.29
  5. Step 5: Solve for x
    x = 1,063,924,956,813.29/1,191,121.60
  6. Step 6: Final answer
    x = 893,212.72

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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.