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Finding the Fourth Proportional to 412,860.90, 619,291.35 and 349,875.30

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Solution

The fourth proportional to 412,860.90, 619,291.35 and 349,875.30 is: 524,812.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,860.90 : 619,291.35 = 349,875.30 : x
  2. Step 2: Convert to fraction form
    412,860.90/619,291.35 = 349,875.30/x
  3. Step 3: Cross multiply
    412,860.90x = 619,291.35 × 349,875.30
  4. Step 4: Simplify right side
    412,860.90x = 216,674,746,868.66
  5. Step 5: Solve for x
    x = 216,674,746,868.66/412,860.90
  6. Step 6: Final answer
    x = 524,812.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.