Home / 668,645.60-1,003,121.37-289,629.42

Finding the Fourth Proportional to 668,645.60, 1,003,121.37 and 289,629.42

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Solution

The fourth proportional to 668,645.60, 1,003,121.37 and 289,629.42 is: 434,510.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,645.60 : 1,003,121.37 = 289,629.42 : x
  2. Step 2: Convert to fraction form
    668,645.60/1,003,121.37 = 289,629.42/x
  3. Step 3: Cross multiply
    668,645.60x = 1,003,121.37 × 289,629.42
  4. Step 4: Simplify right side
    668,645.60x = 290,533,460,582.71
  5. Step 5: Solve for x
    x = 290,533,460,582.71/668,645.60
  6. Step 6: Final answer
    x = 434,510.39

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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.