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Finding the Fourth Proportional to 489,899,589.60, 734,849,384.40 and 440,014,994.40

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Solution

The fourth proportional to 489,899,589.60, 734,849,384.40 and 440,014,994.40 is: 660,022,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,899,589.60 : 734,849,384.40 = 440,014,994.40 : x
  2. Step 2: Convert to fraction form
    489,899,589.60/734,849,384.40 = 440,014,994.40/x
  3. Step 3: Cross multiply
    489,899,589.60x = 734,849,384.40 × 440,014,994.40
  4. Step 4: Simplify right side
    489,899,589.60x = 323,344,747,761,609,408
  5. Step 5: Solve for x
    x = 323,344,747,761,609,408/489,899,589.60
  6. Step 6: Final answer
    x = 660,022,491.60

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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.