Home / 848,110.90-1,272,166.35-428,206.90

Finding the Fourth Proportional to 848,110.90, 1,272,166.35 and 428,206.90

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Solution

The fourth proportional to 848,110.90, 1,272,166.35 and 428,206.90 is: 642,310.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    848,110.90 : 1,272,166.35 = 428,206.90 : x
  2. Step 2: Convert to fraction form
    848,110.90/1,272,166.35 = 428,206.90/x
  3. Step 3: Cross multiply
    848,110.90x = 1,272,166.35 × 428,206.90
  4. Step 4: Simplify right side
    848,110.90x = 544,750,409,017.82
  5. Step 5: Solve for x
    x = 544,750,409,017.82/848,110.90
  6. Step 6: Final answer
    x = 642,310.35

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Double scale
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Similar ratio
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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.