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Finding the Fourth Proportional to 611,856.99, 844,483.39 and 390,952.98

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Solution

The fourth proportional to 611,856.99, 844,483.39 and 390,952.98 is: 539,592.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,856.99 : 844,483.39 = 390,952.98 : x
  2. Step 2: Convert to fraction form
    611,856.99/844,483.39 = 390,952.98/x
  3. Step 3: Cross multiply
    611,856.99x = 844,483.39 × 390,952.98
  4. Step 4: Simplify right side
    611,856.99x = 330,153,296,903.62
  5. Step 5: Solve for x
    x = 330,153,296,903.62/611,856.99
  6. Step 6: Final answer
    x = 539,592.26

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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.