Home / 921,777.60-1,382,666.40-256,929.60

Finding the Fourth Proportional to 921,777.60, 1,382,666.40 and 256,929.60

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Solution

The fourth proportional to 921,777.60, 1,382,666.40 and 256,929.60 is: 385,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,777.60 : 1,382,666.40 = 256,929.60 : x
  2. Step 2: Convert to fraction form
    921,777.60/1,382,666.40 = 256,929.60/x
  3. Step 3: Cross multiply
    921,777.60x = 1,382,666.40 × 256,929.60
  4. Step 4: Simplify right side
    921,777.60x = 355,247,925,085.44
  5. Step 5: Solve for x
    x = 355,247,925,085.44/921,777.60
  6. Step 6: Final answer
    x = 385,394.40

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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.