Home / 638,976,048.90-958,464,073.35-256,298,237.70

Finding the Fourth Proportional to 638,976,048.90, 958,464,073.35 and 256,298,237.70

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Solution

The fourth proportional to 638,976,048.90, 958,464,073.35 and 256,298,237.70 is: 384,447,356.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,976,048.90 : 958,464,073.35 = 256,298,237.70 : x
  2. Step 2: Convert to fraction form
    638,976,048.90/958,464,073.35 = 256,298,237.70/x
  3. Step 3: Cross multiply
    638,976,048.90x = 958,464,073.35 × 256,298,237.70
  4. Step 4: Simplify right side
    638,976,048.90x = 245,652,652,898,368,544
  5. Step 5: Solve for x
    x = 245,652,652,898,368,544/638,976,048.90
  6. Step 6: Final answer
    x = 384,447,356.55

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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.