Home / 938,355,449.60-1,408,205,020.80-393,488,019.20

Finding the Fourth Proportional to 938,355,449.60, 1,408,205,020.80 and 393,488,019.20

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Solution

The fourth proportional to 938,355,449.60, 1,408,205,020.80 and 393,488,019.20 is: 590,513,759.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,355,449.60 : 1,408,205,020.80 = 393,488,019.20 : x
  2. Step 2: Convert to fraction form
    938,355,449.60/1,408,205,020.80 = 393,488,019.20/x
  3. Step 3: Cross multiply
    938,355,449.60x = 1,408,205,020.80 × 393,488,019.20
  4. Step 4: Simplify right side
    938,355,449.60x = 554,111,804,262,086,784
  5. Step 5: Solve for x
    x = 554,111,804,262,086,784/938,355,449.60
  6. Step 6: Final answer
    x = 590,513,759.47

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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.