Home / 1,189,521.02-1,641,540.60-645,656.91

Finding the Fourth Proportional to 1,189,521.02, 1,641,540.60 and 645,656.91

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Solution

The fourth proportional to 1,189,521.02, 1,641,540.60 and 645,656.91 is: 891,007.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,521.02 : 1,641,540.60 = 645,656.91 : x
  2. Step 2: Convert to fraction form
    1,189,521.02/1,641,540.60 = 645,656.91/x
  3. Step 3: Cross multiply
    1,189,521.02x = 1,641,540.60 × 645,656.91
  4. Step 4: Simplify right side
    1,189,521.02x = 1,059,872,031,435.55
  5. Step 5: Solve for x
    x = 1,059,872,031,435.55/1,189,521.02
  6. Step 6: Final answer
    x = 891,007.40

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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.