Home / 1,432,000.85-1,976,139.25-778,621.64

Finding the Fourth Proportional to 1,432,000.85, 1,976,139.25 and 778,621.64

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Solution

The fourth proportional to 1,432,000.85, 1,976,139.25 and 778,621.64 is: 1,074,485.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,000.85 : 1,976,139.25 = 778,621.64 : x
  2. Step 2: Convert to fraction form
    1,432,000.85/1,976,139.25 = 778,621.64/x
  3. Step 3: Cross multiply
    1,432,000.85x = 1,976,139.25 × 778,621.64
  4. Step 4: Simplify right side
    1,432,000.85x = 1,538,664,771,876.12
  5. Step 5: Solve for x
    x = 1,538,664,771,876.12/1,432,000.85
  6. Step 6: Final answer
    x = 1,074,485.94

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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.