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Finding the Fourth Proportional to 671,012.55, 925,845.30 and 489,823.25

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Solution

The fourth proportional to 671,012.55, 925,845.30 and 489,823.25 is: 675,845.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,012.55 : 925,845.30 = 489,823.25 : x
  2. Step 2: Convert to fraction form
    671,012.55/925,845.30 = 489,823.25/x
  3. Step 3: Cross multiply
    671,012.55x = 925,845.30 × 489,823.25
  4. Step 4: Simplify right side
    671,012.55x = 453,500,549,214.00
  5. Step 5: Solve for x
    x = 453,500,549,214.00/671,012.55
  6. Step 6: Final answer
    x = 675,845.11

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1.5x scale

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.