Home / 394,849,781.41-545,460,269.18-315,360,479.89

Finding the Fourth Proportional to 394,849,781.41, 545,460,269.18 and 315,360,479.89

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Solution

The fourth proportional to 394,849,781.41, 545,460,269.18 and 315,360,479.89 is: 435,650,772.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,849,781.41 : 545,460,269.18 = 315,360,479.89 : x
  2. Step 2: Convert to fraction form
    394,849,781.41/545,460,269.18 = 315,360,479.89/x
  3. Step 3: Cross multiply
    394,849,781.41x = 545,460,269.18 × 315,360,479.89
  4. Step 4: Simplify right side
    394,849,781.41x = 172,016,612,247,338,944
  5. Step 5: Solve for x
    x = 172,016,612,247,338,944/394,849,781.41
  6. Step 6: Final answer
    x = 435,650,772.39

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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.