Home / 1,066,702.72-1,472,065.52-722,643.88

Finding the Fourth Proportional to 1,066,702.72, 1,472,065.52 and 722,643.88

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Solution

The fourth proportional to 1,066,702.72, 1,472,065.52 and 722,643.88 is: 997,259.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,066,702.72 : 1,472,065.52 = 722,643.88 : x
  2. Step 2: Convert to fraction form
    1,066,702.72/1,472,065.52 = 722,643.88/x
  3. Step 3: Cross multiply
    1,066,702.72x = 1,472,065.52 × 722,643.88
  4. Step 4: Simplify right side
    1,066,702.72x = 1,063,779,138,987.02
  5. Step 5: Solve for x
    x = 1,063,779,138,987.02/1,066,702.72
  6. Step 6: Final answer
    x = 997,259.24

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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.