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Finding the Fourth Proportional to 489,625.20, 734,610.60 and 472,345.20

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Solution

The fourth proportional to 489,625.20, 734,610.60 and 472,345.20 is: 708,684.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,625.20 : 734,610.60 = 472,345.20 : x
  2. Step 2: Convert to fraction form
    489,625.20/734,610.60 = 472,345.20/x
  3. Step 3: Cross multiply
    489,625.20x = 734,610.60 × 472,345.20
  4. Step 4: Simplify right side
    489,625.20x = 346,989,790,779.12
  5. Step 5: Solve for x
    x = 346,989,790,779.12/489,625.20
  6. Step 6: Final answer
    x = 708,684.50

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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.