Home / 910,359.90-1,365,922.58-489,143.70

Finding the Fourth Proportional to 910,359.90, 1,365,922.58 and 489,143.70

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Solution

The fourth proportional to 910,359.90, 1,365,922.58 and 489,143.70 is: 733,921.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,359.90 : 1,365,922.58 = 489,143.70 : x
  2. Step 2: Convert to fraction form
    910,359.90/1,365,922.58 = 489,143.70/x
  3. Step 3: Cross multiply
    910,359.90x = 1,365,922.58 × 489,143.70
  4. Step 4: Simplify right side
    910,359.90x = 668,132,422,249.03
  5. Step 5: Solve for x
    x = 668,132,422,249.03/910,359.90
  6. Step 6: Final answer
    x = 733,921.19

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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.