Home / 421,277,476.76-631,976,663.81-130,170,018.32

Finding the Fourth Proportional to 421,277,476.76, 631,976,663.81 and 130,170,018.32

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Solution

The fourth proportional to 421,277,476.76, 631,976,663.81 and 130,170,018.32 is: 195,273,705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,277,476.76 : 631,976,663.81 = 130,170,018.32 : x
  2. Step 2: Convert to fraction form
    421,277,476.76/631,976,663.81 = 130,170,018.32/x
  3. Step 3: Cross multiply
    421,277,476.76x = 631,976,663.81 × 130,170,018.32
  4. Step 4: Simplify right side
    421,277,476.76x = 82,264,413,902,149,440
  5. Step 5: Solve for x
    x = 82,264,413,902,149,440/421,277,476.76
  6. Step 6: Final answer
    x = 195,273,705.43

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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.