Home / 647,690,872.52-971,539,132.07-205,035,718.28

Finding the Fourth Proportional to 647,690,872.52, 971,539,132.07 and 205,035,718.28

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Solution

The fourth proportional to 647,690,872.52, 971,539,132.07 and 205,035,718.28 is: 307,554,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,690,872.52 : 971,539,132.07 = 205,035,718.28 : x
  2. Step 2: Convert to fraction form
    647,690,872.52/971,539,132.07 = 205,035,718.28/x
  3. Step 3: Cross multiply
    647,690,872.52x = 971,539,132.07 × 205,035,718.28
  4. Step 4: Simplify right side
    647,690,872.52x = 199,200,223,776,755,136
  5. Step 5: Solve for x
    x = 199,200,223,776,755,136/647,690,872.52
  6. Step 6: Final answer
    x = 307,554,471.16

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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.