Home / 1,289,393.18-1,779,405.25-708,636.90

Finding the Fourth Proportional to 1,289,393.18, 1,779,405.25 and 708,636.90

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Solution

The fourth proportional to 1,289,393.18, 1,779,405.25 and 708,636.90 is: 977,942.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,393.18 : 1,779,405.25 = 708,636.90 : x
  2. Step 2: Convert to fraction form
    1,289,393.18/1,779,405.25 = 708,636.90/x
  3. Step 3: Cross multiply
    1,289,393.18x = 1,779,405.25 × 708,636.90
  4. Step 4: Simplify right side
    1,289,393.18x = 1,260,952,210,420.90
  5. Step 5: Solve for x
    x = 1,260,952,210,420.90/1,289,393.18
  6. Step 6: Final answer
    x = 977,942.36

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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.