Home / 431,355,999.80-647,033,999.70-354,765,510.20

Finding the Fourth Proportional to 431,355,999.80, 647,033,999.70 and 354,765,510.20

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Solution

The fourth proportional to 431,355,999.80, 647,033,999.70 and 354,765,510.20 is: 532,148,265.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,355,999.80 : 647,033,999.70 = 354,765,510.20 : x
  2. Step 2: Convert to fraction form
    431,355,999.80/647,033,999.70 = 354,765,510.20/x
  3. Step 3: Cross multiply
    431,355,999.80x = 647,033,999.70 × 354,765,510.20
  4. Step 4: Simplify right side
    431,355,999.80x = 229,545,347,020,317,152
  5. Step 5: Solve for x
    x = 229,545,347,020,317,152/431,355,999.80
  6. Step 6: Final answer
    x = 532,148,265.30

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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.