Home / 1,257,347.21-1,886,302.03-458,628.78

Finding the Fourth Proportional to 1,257,347.21, 1,886,302.03 and 458,628.78

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Solution

The fourth proportional to 1,257,347.21, 1,886,302.03 and 458,628.78 is: 688,045.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,347.21 : 1,886,302.03 = 458,628.78 : x
  2. Step 2: Convert to fraction form
    1,257,347.21/1,886,302.03 = 458,628.78/x
  3. Step 3: Cross multiply
    1,257,347.21x = 1,886,302.03 × 458,628.78
  4. Step 4: Simplify right side
    1,257,347.21x = 865,112,405,517.41
  5. Step 5: Solve for x
    x = 865,112,405,517.41/1,257,347.21
  6. Step 6: Final answer
    x = 688,045.75

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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.