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Finding the Fourth Proportional to 520,395.66, 717,882.93 and 348,320.94

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Solution

The fourth proportional to 520,395.66, 717,882.93 and 348,320.94 is: 480,506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,395.66 : 717,882.93 = 348,320.94 : x
  2. Step 2: Convert to fraction form
    520,395.66/717,882.93 = 348,320.94/x
  3. Step 3: Cross multiply
    520,395.66x = 717,882.93 × 348,320.94
  4. Step 4: Simplify right side
    520,395.66x = 250,053,656,987.55
  5. Step 5: Solve for x
    x = 250,053,656,987.55/520,395.66
  6. Step 6: Final answer
    x = 480,506.81

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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.