Home / 712,176.15-982,645.97-421,643.45

Finding the Fourth Proportional to 712,176.15, 982,645.97 and 421,643.45

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Solution

The fourth proportional to 712,176.15, 982,645.97 and 421,643.45 is: 581,774.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,176.15 : 982,645.97 = 421,643.45 : x
  2. Step 2: Convert to fraction form
    712,176.15/982,645.97 = 421,643.45/x
  3. Step 3: Cross multiply
    712,176.15x = 982,645.97 × 421,643.45
  4. Step 4: Simplify right side
    712,176.15x = 414,326,237,267.79
  5. Step 5: Solve for x
    x = 414,326,237,267.79/712,176.15
  6. Step 6: Final answer
    x = 581,774.94

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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.