Home / 1,385,830-1,912,445.52-782,256.88

Finding the Fourth Proportional to 1,385,830, 1,912,445.52 and 782,256.88

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Solution

The fourth proportional to 1,385,830, 1,912,445.52 and 782,256.88 is: 1,079,514.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,830 : 1,912,445.52 = 782,256.88 : x
  2. Step 2: Convert to fraction form
    1,385,830/1,912,445.52 = 782,256.88/x
  3. Step 3: Cross multiply
    1,385,830x = 1,912,445.52 × 782,256.88
  4. Step 4: Simplify right side
    1,385,830x = 1,496,023,665,645.18
  5. Step 5: Solve for x
    x = 1,496,023,665,645.18/1,385,830
  6. Step 6: Final answer
    x = 1,079,514.56

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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.