Home / 718,730,303.49-991,848,480.17-388,705,442.49

Finding the Fourth Proportional to 718,730,303.49, 991,848,480.17 and 388,705,442.49

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Solution

The fourth proportional to 718,730,303.49, 991,848,480.17 and 388,705,442.49 is: 536,413,868.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,730,303.49 : 991,848,480.17 = 388,705,442.49 : x
  2. Step 2: Convert to fraction form
    718,730,303.49/991,848,480.17 = 388,705,442.49/x
  3. Step 3: Cross multiply
    718,730,303.49x = 991,848,480.17 × 388,705,442.49
  4. Step 4: Simplify right side
    718,730,303.49x = 385,536,902,365,570,304
  5. Step 5: Solve for x
    x = 385,536,902,365,570,304/718,730,303.49
  6. Step 6: Final answer
    x = 536,413,868.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.