Home / 825,688.71-1,238,235.95-285,798.40

Finding the Fourth Proportional to 825,688.71, 1,238,235.95 and 285,798.40

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Solution

The fourth proportional to 825,688.71, 1,238,235.95 and 285,798.40 is: 428,594.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,688.71 : 1,238,235.95 = 285,798.40 : x
  2. Step 2: Convert to fraction form
    825,688.71/1,238,235.95 = 285,798.40/x
  3. Step 3: Cross multiply
    825,688.71x = 1,238,235.95 × 285,798.40
  4. Step 4: Simplify right side
    825,688.71x = 353,885,850,951.39
  5. Step 5: Solve for x
    x = 353,885,850,951.39/825,688.71
  6. Step 6: Final answer
    x = 428,594.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.