Home / 528,640,705.76-729,481,467.18-305,636,760.83

Finding the Fourth Proportional to 528,640,705.76, 729,481,467.18 and 305,636,760.83

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Solution

The fourth proportional to 528,640,705.76, 729,481,467.18 and 305,636,760.83 is: 421,754,038.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,640,705.76 : 729,481,467.18 = 305,636,760.83 : x
  2. Step 2: Convert to fraction form
    528,640,705.76/729,481,467.18 = 305,636,760.83/x
  3. Step 3: Cross multiply
    528,640,705.76x = 729,481,467.18 × 305,636,760.83
  4. Step 4: Simplify right side
    528,640,705.76x = 222,956,352,710,763,712
  5. Step 5: Solve for x
    x = 222,956,352,710,763,712/528,640,705.76
  6. Step 6: Final answer
    x = 421,754,038.77

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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.