Home / 1,289,607.88-1,779,702.04-716,672.20

Finding the Fourth Proportional to 1,289,607.88, 1,779,702.04 and 716,672.20

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Solution

The fourth proportional to 1,289,607.88, 1,779,702.04 and 716,672.20 is: 989,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,607.88 : 1,779,702.04 = 716,672.20 : x
  2. Step 2: Convert to fraction form
    1,289,607.88/1,779,702.04 = 716,672.20/x
  3. Step 3: Cross multiply
    1,289,607.88x = 1,779,702.04 × 716,672.20
  4. Step 4: Simplify right side
    1,289,607.88x = 1,275,462,976,351.29
  5. Step 5: Solve for x
    x = 1,275,462,976,351.29/1,289,607.88
  6. Step 6: Final answer
    x = 989,031.62

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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.