Home / 1,189,622.78-1,641,634.80-645,746.90

Finding the Fourth Proportional to 1,189,622.78, 1,641,634.80 and 645,746.90

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Solution

The fourth proportional to 1,189,622.78, 1,641,634.80 and 645,746.90 is: 891,106.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,622.78 : 1,641,634.80 = 645,746.90 : x
  2. Step 2: Convert to fraction form
    1,189,622.78/1,641,634.80 = 645,746.90/x
  3. Step 3: Cross multiply
    1,189,622.78x = 1,641,634.80 × 645,746.90
  4. Step 4: Simplify right side
    1,189,622.78x = 1,060,080,583,032.12
  5. Step 5: Solve for x
    x = 1,060,080,583,032.12/1,189,622.78
  6. Step 6: Final answer
    x = 891,106.49

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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.