Home / 791,211,100.40-1,186,925,787.90-459,374,387.82

Finding the Fourth Proportional to 791,211,100.40, 1,186,925,787.90 and 459,374,387.82

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Solution

The fourth proportional to 791,211,100.40, 1,186,925,787.90 and 459,374,387.82 is: 689,124,946.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,211,100.40 : 1,186,925,787.90 = 459,374,387.82 : x
  2. Step 2: Convert to fraction form
    791,211,100.40/1,186,925,787.90 = 459,374,387.82/x
  3. Step 3: Cross multiply
    791,211,100.40x = 1,186,925,787.90 × 459,374,387.82
  4. Step 4: Simplify right side
    791,211,100.40x = 545,243,307,204,333,696
  5. Step 5: Solve for x
    x = 545,243,307,204,333,696/791,211,100.40
  6. Step 6: Final answer
    x = 689,124,946.46

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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.