Home / 699,264,711.20-1,048,897,066.80-427,166,919.20

Finding the Fourth Proportional to 699,264,711.20, 1,048,897,066.80 and 427,166,919.20

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Solution

The fourth proportional to 699,264,711.20, 1,048,897,066.80 and 427,166,919.20 is: 640,750,378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,264,711.20 : 1,048,897,066.80 = 427,166,919.20 : x
  2. Step 2: Convert to fraction form
    699,264,711.20/1,048,897,066.80 = 427,166,919.20/x
  3. Step 3: Cross multiply
    699,264,711.20x = 1,048,897,066.80 × 427,166,919.20
  4. Step 4: Simplify right side
    699,264,711.20x = 448,054,128,582,872,576
  5. Step 5: Solve for x
    x = 448,054,128,582,872,576/699,264,711.20
  6. Step 6: Final answer
    x = 640,750,378.80

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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.