Home / 638,681,928.39-958,016,508.37-201,982,686.93

Finding the Fourth Proportional to 638,681,928.39, 958,016,508.37 and 201,982,686.93

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Solution

The fourth proportional to 638,681,928.39, 958,016,508.37 and 201,982,686.93 is: 302,972,011.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,681,928.39 : 958,016,508.37 = 201,982,686.93 : x
  2. Step 2: Convert to fraction form
    638,681,928.39/958,016,508.37 = 201,982,686.93/x
  3. Step 3: Cross multiply
    638,681,928.39x = 958,016,508.37 × 201,982,686.93
  4. Step 4: Simplify right side
    638,681,928.39x = 193,502,748,483,364,480
  5. Step 5: Solve for x
    x = 193,502,748,483,364,480/638,681,928.39
  6. Step 6: Final answer
    x = 302,972,011.39

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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.