Home / 815,299.84-1,123,262.39-630,904.28

Finding the Fourth Proportional to 815,299.84, 1,123,262.39 and 630,904.28

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Solution

The fourth proportional to 815,299.84, 1,123,262.39 and 630,904.28 is: 869,215.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,299.84 : 1,123,262.39 = 630,904.28 : x
  2. Step 2: Convert to fraction form
    815,299.84/1,123,262.39 = 630,904.28/x
  3. Step 3: Cross multiply
    815,299.84x = 1,123,262.39 × 630,904.28
  4. Step 4: Simplify right side
    815,299.84x = 708,671,053,799.45
  5. Step 5: Solve for x
    x = 708,671,053,799.45/815,299.84
  6. Step 6: Final answer
    x = 869,215.25

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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.