Home / 805,294.95-1,111,541.18-499,464.87

Finding the Fourth Proportional to 805,294.95, 1,111,541.18 and 499,464.87

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Solution

The fourth proportional to 805,294.95, 1,111,541.18 and 499,464.87 is: 689,406.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,294.95 : 1,111,541.18 = 499,464.87 : x
  2. Step 2: Convert to fraction form
    805,294.95/1,111,541.18 = 499,464.87/x
  3. Step 3: Cross multiply
    805,294.95x = 1,111,541.18 × 499,464.87
  4. Step 4: Simplify right side
    805,294.95x = 555,175,768,471.02
  5. Step 5: Solve for x
    x = 555,175,768,471.02/805,294.95
  6. Step 6: Final answer
    x = 689,406.74

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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.