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Finding the Fourth Proportional to 620,571,685.80, 930,857,528.70 and 275,158,655.40

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Solution

The fourth proportional to 620,571,685.80, 930,857,528.70 and 275,158,655.40 is: 412,737,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,571,685.80 : 930,857,528.70 = 275,158,655.40 : x
  2. Step 2: Convert to fraction form
    620,571,685.80/930,857,528.70 = 275,158,655.40/x
  3. Step 3: Cross multiply
    620,571,685.80x = 930,857,528.70 × 275,158,655.40
  4. Step 4: Simplify right side
    620,571,685.80x = 256,133,505,966,058,912
  5. Step 5: Solve for x
    x = 256,133,505,966,058,912/620,571,685.80
  6. Step 6: Final answer
    x = 412,737,983.10

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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.