Home / 857,358.95-1,286,038.71-317,800.76

Finding the Fourth Proportional to 857,358.95, 1,286,038.71 and 317,800.76

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Solution

The fourth proportional to 857,358.95, 1,286,038.71 and 317,800.76 is: 476,701.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,358.95 : 1,286,038.71 = 317,800.76 : x
  2. Step 2: Convert to fraction form
    857,358.95/1,286,038.71 = 317,800.76/x
  3. Step 3: Cross multiply
    857,358.95x = 1,286,038.71 × 317,800.76
  4. Step 4: Simplify right side
    857,358.95x = 408,704,072,997.23
  5. Step 5: Solve for x
    x = 408,704,072,997.23/857,358.95
  6. Step 6: Final answer
    x = 476,701.24

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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.