Home / 758,986.38-1,138,643.58-285,670.35

Finding the Fourth Proportional to 758,986.38, 1,138,643.58 and 285,670.35

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Solution

The fourth proportional to 758,986.38, 1,138,643.58 and 285,670.35 is: 428,567.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,986.38 : 1,138,643.58 = 285,670.35 : x
  2. Step 2: Convert to fraction form
    758,986.38/1,138,643.58 = 285,670.35/x
  3. Step 3: Cross multiply
    758,986.38x = 1,138,643.58 × 285,670.35
  4. Step 4: Simplify right side
    758,986.38x = 325,276,710,023.85
  5. Step 5: Solve for x
    x = 325,276,710,023.85/758,986.38
  6. Step 6: Final answer
    x = 428,567.26

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1.5x scale

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.