Home / 393,077,013,631.56-589,674,475,092.10-138,061,449,320.43

Finding the Fourth Proportional to 393,077,013,631.56, 589,674,475,092.10 and 138,061,449,320.43

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Solution

The fourth proportional to 393,077,013,631.56, 589,674,475,092.10 and 138,061,449,320.43 is: 207,112,880,771.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,077,013,631.56 : 589,674,475,092.10 = 138,061,449,320.43 : x
  2. Step 2: Convert to fraction form
    393,077,013,631.56/589,674,475,092.10 = 138,061,449,320.43/x
  3. Step 3: Cross multiply
    393,077,013,631.56x = 589,674,475,092.10 × 138,061,449,320.43
  4. Step 4: Simplify right side
    393,077,013,631.56x = 81,411,312,658,479,117,762,560
  5. Step 5: Solve for x
    x = 81,411,312,658,479,117,762,560/393,077,013,631.56
  6. Step 6: Final answer
    x = 207,112,880,771.98

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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.