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Finding the Fourth Proportional to 708,018.45, 977,062.55 and 385,727.55

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Solution

The fourth proportional to 708,018.45, 977,062.55 and 385,727.55 is: 532,302.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,018.45 : 977,062.55 = 385,727.55 : x
  2. Step 2: Convert to fraction form
    708,018.45/977,062.55 = 385,727.55/x
  3. Step 3: Cross multiply
    708,018.45x = 977,062.55 × 385,727.55
  4. Step 4: Simplify right side
    708,018.45x = 376,879,941,679.62
  5. Step 5: Solve for x
    x = 376,879,941,679.62/708,018.45
  6. Step 6: Final answer
    x = 532,302.43

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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.