Home / 858,026.90-1,183,783.84-490,240.15

Finding the Fourth Proportional to 858,026.90, 1,183,783.84 and 490,240.15

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Solution

The fourth proportional to 858,026.90, 1,183,783.84 and 490,240.15 is: 676,363.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,026.90 : 1,183,783.84 = 490,240.15 : x
  2. Step 2: Convert to fraction form
    858,026.90/1,183,783.84 = 490,240.15/x
  3. Step 3: Cross multiply
    858,026.90x = 1,183,783.84 × 490,240.15
  4. Step 4: Simplify right side
    858,026.90x = 580,338,367,289.18
  5. Step 5: Solve for x
    x = 580,338,367,289.18/858,026.90
  6. Step 6: Final answer
    x = 676,363.84

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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.