Home / 1,315,681.72-1,815,640.74-712,069.72

Finding the Fourth Proportional to 1,315,681.72, 1,815,640.74 and 712,069.72

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Solution

The fourth proportional to 1,315,681.72, 1,815,640.74 and 712,069.72 is: 982,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,681.72 : 1,815,640.74 = 712,069.72 : x
  2. Step 2: Convert to fraction form
    1,315,681.72/1,815,640.74 = 712,069.72/x
  3. Step 3: Cross multiply
    1,315,681.72x = 1,815,640.74 × 712,069.72
  4. Step 4: Simplify right side
    1,315,681.72x = 1,292,862,793,352.39
  5. Step 5: Solve for x
    x = 1,292,862,793,352.39/1,315,681.72
  6. Step 6: Final answer
    x = 982,656.20

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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.