Home / 830,774.20-1,246,161.30-511,909.60

Finding the Fourth Proportional to 830,774.20, 1,246,161.30 and 511,909.60

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Solution

The fourth proportional to 830,774.20, 1,246,161.30 and 511,909.60 is: 767,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,774.20 : 1,246,161.30 = 511,909.60 : x
  2. Step 2: Convert to fraction form
    830,774.20/1,246,161.30 = 511,909.60/x
  3. Step 3: Cross multiply
    830,774.20x = 1,246,161.30 × 511,909.60
  4. Step 4: Simplify right side
    830,774.20x = 637,921,932,618.48
  5. Step 5: Solve for x
    x = 637,921,932,618.48/830,774.20
  6. Step 6: Final answer
    x = 767,864.40

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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.