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Finding the Fourth Proportional to 393,163,041.80, 589,744,562.70 and 368,929,332.20

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Solution

The fourth proportional to 393,163,041.80, 589,744,562.70 and 368,929,332.20 is: 553,393,998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,163,041.80 : 589,744,562.70 = 368,929,332.20 : x
  2. Step 2: Convert to fraction form
    393,163,041.80/589,744,562.70 = 368,929,332.20/x
  3. Step 3: Cross multiply
    393,163,041.80x = 589,744,562.70 × 368,929,332.20
  4. Step 4: Simplify right side
    393,163,041.80x = 217,574,067,685,492,032
  5. Step 5: Solve for x
    x = 217,574,067,685,492,032/393,163,041.80
  6. Step 6: Final answer
    x = 553,393,998.30

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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.