Home / 840,673.92-1,261,582.08-342,128.64

Finding the Fourth Proportional to 840,673.92, 1,261,582.08 and 342,128.64

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Solution

The fourth proportional to 840,673.92, 1,261,582.08 and 342,128.64 is: 513,425.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,673.92 : 1,261,582.08 = 342,128.64 : x
  2. Step 2: Convert to fraction form
    840,673.92/1,261,582.08 = 342,128.64/x
  3. Step 3: Cross multiply
    840,673.92x = 1,261,582.08 × 342,128.64
  4. Step 4: Simplify right side
    840,673.92x = 431,623,361,278.77
  5. Step 5: Solve for x
    x = 431,623,361,278.77/840,673.92
  6. Step 6: Final answer
    x = 513,425.42

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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.