Home / 1,289,210.75-1,779,140.46-708,469.98

Finding the Fourth Proportional to 1,289,210.75, 1,779,140.46 and 708,469.98

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Solution

The fourth proportional to 1,289,210.75, 1,779,140.46 and 708,469.98 is: 977,704.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,210.75 : 1,779,140.46 = 708,469.98 : x
  2. Step 2: Convert to fraction form
    1,289,210.75/1,779,140.46 = 708,469.98/x
  3. Step 3: Cross multiply
    1,289,210.75x = 1,779,140.46 × 708,469.98
  4. Step 4: Simplify right side
    1,289,210.75x = 1,260,467,606,113.39
  5. Step 5: Solve for x
    x = 1,260,467,606,113.39/1,289,210.75
  6. Step 6: Final answer
    x = 977,704.86

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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.