Home / 1,992,902,493.80-2,989,353,740.70-612,537,640.40

Finding the Fourth Proportional to 1,992,902,493.80, 2,989,353,740.70 and 612,537,640.40

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Solution

The fourth proportional to 1,992,902,493.80, 2,989,353,740.70 and 612,537,640.40 is: 918,806,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,902,493.80 : 2,989,353,740.70 = 612,537,640.40 : x
  2. Step 2: Convert to fraction form
    1,992,902,493.80/2,989,353,740.70 = 612,537,640.40/x
  3. Step 3: Cross multiply
    1,992,902,493.80x = 2,989,353,740.70 × 612,537,640.40
  4. Step 4: Simplify right side
    1,992,902,493.80x = 1,831,091,686,649,291,264
  5. Step 5: Solve for x
    x = 1,831,091,686,649,291,264/1,992,902,493.80
  6. Step 6: Final answer
    x = 918,806,460.60

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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.