Home / 938,355,430.10-1,408,204,991.55-393,487,999.70

Finding the Fourth Proportional to 938,355,430.10, 1,408,204,991.55 and 393,487,999.70

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Solution

The fourth proportional to 938,355,430.10, 1,408,204,991.55 and 393,487,999.70 is: 590,513,730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,355,430.10 : 1,408,204,991.55 = 393,487,999.70 : x
  2. Step 2: Convert to fraction form
    938,355,430.10/1,408,204,991.55 = 393,487,999.70/x
  3. Step 3: Cross multiply
    938,355,430.10x = 1,408,204,991.55 × 393,487,999.70
  4. Step 4: Simplify right side
    938,355,430.10x = 554,111,765,292,564,864
  5. Step 5: Solve for x
    x = 554,111,765,292,564,864/938,355,430.10
  6. Step 6: Final answer
    x = 590,513,730.21

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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.