Home / 906,815.10-1,363,175.10-642,406.80

Finding the Fourth Proportional to 906,815.10, 1,363,175.10 and 642,406.80

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Solution

The fourth proportional to 906,815.10, 1,363,175.10 and 642,406.80 is: 965,701.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,815.10 : 1,363,175.10 = 642,406.80 : x
  2. Step 2: Convert to fraction form
    906,815.10/1,363,175.10 = 642,406.80/x
  3. Step 3: Cross multiply
    906,815.10x = 1,363,175.10 × 642,406.80
  4. Step 4: Simplify right side
    906,815.10x = 875,712,953,830.68
  5. Step 5: Solve for x
    x = 875,712,953,830.68/906,815.10
  6. Step 6: Final answer
    x = 965,701.78

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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.