Home / 806,573,021.20-1,209,859,531.80-397,824,989.20

Finding the Fourth Proportional to 806,573,021.20, 1,209,859,531.80 and 397,824,989.20

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Solution

The fourth proportional to 806,573,021.20, 1,209,859,531.80 and 397,824,989.20 is: 596,737,483.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,573,021.20 : 1,209,859,531.80 = 397,824,989.20 : x
  2. Step 2: Convert to fraction form
    806,573,021.20/1,209,859,531.80 = 397,824,989.20/x
  3. Step 3: Cross multiply
    806,573,021.20x = 1,209,859,531.80 × 397,824,989.20
  4. Step 4: Simplify right side
    806,573,021.20x = 481,312,355,171,852,032
  5. Step 5: Solve for x
    x = 481,312,355,171,852,032/806,573,021.20
  6. Step 6: Final answer
    x = 596,737,483.80

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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.