Home / 781,488.68-1,078,216.26-437,288.90

Finding the Fourth Proportional to 781,488.68, 1,078,216.26 and 437,288.90

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Solution

The fourth proportional to 781,488.68, 1,078,216.26 and 437,288.90 is: 603,325.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,488.68 : 1,078,216.26 = 437,288.90 : x
  2. Step 2: Convert to fraction form
    781,488.68/1,078,216.26 = 437,288.90/x
  3. Step 3: Cross multiply
    781,488.68x = 1,078,216.26 × 437,288.90
  4. Step 4: Simplify right side
    781,488.68x = 471,492,002,297.51
  5. Step 5: Solve for x
    x = 471,492,002,297.51/781,488.68
  6. Step 6: Final answer
    x = 603,325.44

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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.