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Finding the Fourth Proportional to 718,411.20, 1,078,783.20 and 482,798.40

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Solution

The fourth proportional to 718,411.20, 1,078,783.20 and 482,798.40 is: 724,981.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,411.20 : 1,078,783.20 = 482,798.40 : x
  2. Step 2: Convert to fraction form
    718,411.20/1,078,783.20 = 482,798.40/x
  3. Step 3: Cross multiply
    718,411.20x = 1,078,783.20 × 482,798.40
  4. Step 4: Simplify right side
    718,411.20x = 520,834,802,906.88
  5. Step 5: Solve for x
    x = 520,834,802,906.88/718,411.20
  6. Step 6: Final answer
    x = 724,981.46

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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.