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Finding the Fourth Proportional to 707,988.44, 977,019.22 and 385,698.76

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Solution

The fourth proportional to 707,988.44, 977,019.22 and 385,698.76 is: 532,261.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,988.44 : 977,019.22 = 385,698.76 : x
  2. Step 2: Convert to fraction form
    707,988.44/977,019.22 = 385,698.76/x
  3. Step 3: Cross multiply
    707,988.44x = 977,019.22 × 385,698.76
  4. Step 4: Simplify right side
    707,988.44x = 376,835,101,650.17
  5. Step 5: Solve for x
    x = 376,835,101,650.17/707,988.44
  6. Step 6: Final answer
    x = 532,261.66

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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.