Home / 758,128.53-1,045,778.80-489,856.53

Finding the Fourth Proportional to 758,128.53, 1,045,778.80 and 489,856.53

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Solution

The fourth proportional to 758,128.53, 1,045,778.80 and 489,856.53 is: 675,718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,128.53 : 1,045,778.80 = 489,856.53 : x
  2. Step 2: Convert to fraction form
    758,128.53/1,045,778.80 = 489,856.53/x
  3. Step 3: Cross multiply
    758,128.53x = 1,045,778.80 × 489,856.53
  4. Step 4: Simplify right side
    758,128.53x = 512,281,574,115.56
  5. Step 5: Solve for x
    x = 512,281,574,115.56/758,128.53
  6. Step 6: Final answer
    x = 675,718.63

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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.