Home / 1,289,456.66-1,779,490.21-708,669.22

Finding the Fourth Proportional to 1,289,456.66, 1,779,490.21 and 708,669.22

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Solution

The fourth proportional to 1,289,456.66, 1,779,490.21 and 708,669.22 is: 977,985.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,456.66 : 1,779,490.21 = 708,669.22 : x
  2. Step 2: Convert to fraction form
    1,289,456.66/1,779,490.21 = 708,669.22/x
  3. Step 3: Cross multiply
    1,289,456.66x = 1,779,490.21 × 708,669.22
  4. Step 4: Simplify right side
    1,289,456.66x = 1,261,069,939,118.34
  5. Step 5: Solve for x
    x = 1,261,069,939,118.34/1,289,456.66
  6. Step 6: Final answer
    x = 977,985.52

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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.