Home / 768,418.77-1,059,431.95-630,087.98

Finding the Fourth Proportional to 768,418.77, 1,059,431.95 and 630,087.98

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Solution

The fourth proportional to 768,418.77, 1,059,431.95 and 630,087.98 is: 868,712.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,418.77 : 1,059,431.95 = 630,087.98 : x
  2. Step 2: Convert to fraction form
    768,418.77/1,059,431.95 = 630,087.98/x
  3. Step 3: Cross multiply
    768,418.77x = 1,059,431.95 × 630,087.98
  4. Step 4: Simplify right side
    768,418.77x = 667,535,333,099.16
  5. Step 5: Solve for x
    x = 667,535,333,099.16/768,418.77
  6. Step 6: Final answer
    x = 868,712.95

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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.