Home / 663,185,381.60-994,778,072.40-209,315,813.60

Finding the Fourth Proportional to 663,185,381.60, 994,778,072.40 and 209,315,813.60

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Solution

The fourth proportional to 663,185,381.60, 994,778,072.40 and 209,315,813.60 is: 313,973,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,185,381.60 : 994,778,072.40 = 209,315,813.60 : x
  2. Step 2: Convert to fraction form
    663,185,381.60/994,778,072.40 = 209,315,813.60/x
  3. Step 3: Cross multiply
    663,185,381.60x = 994,778,072.40 × 209,315,813.60
  4. Step 4: Simplify right side
    663,185,381.60x = 208,222,781,575,845,696
  5. Step 5: Solve for x
    x = 208,222,781,575,845,696/663,185,381.60
  6. Step 6: Final answer
    x = 313,973,720.40

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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.