Home / 666,863,580.81-920,270,830.38-369,525,072.33

Finding the Fourth Proportional to 666,863,580.81, 920,270,830.38 and 369,525,072.33

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Solution

The fourth proportional to 666,863,580.81, 920,270,830.38 and 369,525,072.33 is: 509,944,094.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,863,580.81 : 920,270,830.38 = 369,525,072.33 : x
  2. Step 2: Convert to fraction form
    666,863,580.81/920,270,830.38 = 369,525,072.33/x
  3. Step 3: Cross multiply
    666,863,580.81x = 920,270,830.38 × 369,525,072.33
  4. Step 4: Simplify right side
    666,863,580.81x = 340,063,145,157,972,928
  5. Step 5: Solve for x
    x = 340,063,145,157,972,928/666,863,580.81
  6. Step 6: Final answer
    x = 509,944,094.93

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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.