Home / 842,521.45-1,162,395.71-479,688.59

Finding the Fourth Proportional to 842,521.45, 1,162,395.71 and 479,688.59

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Solution

The fourth proportional to 842,521.45, 1,162,395.71 and 479,688.59 is: 661,808.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,521.45 : 1,162,395.71 = 479,688.59 : x
  2. Step 2: Convert to fraction form
    842,521.45/1,162,395.71 = 479,688.59/x
  3. Step 3: Cross multiply
    842,521.45x = 1,162,395.71 × 479,688.59
  4. Step 4: Simplify right side
    842,521.45x = 557,587,950,941.53
  5. Step 5: Solve for x
    x = 557,587,950,941.53/842,521.45
  6. Step 6: Final answer
    x = 661,808.61

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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.