Home / 1,868,946,148.80-2,803,419,223.20-778,287,499.20

Finding the Fourth Proportional to 1,868,946,148.80, 2,803,419,223.20 and 778,287,499.20

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Solution

The fourth proportional to 1,868,946,148.80, 2,803,419,223.20 and 778,287,499.20 is: 1,167,431,248.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868,946,148.80 : 2,803,419,223.20 = 778,287,499.20 : x
  2. Step 2: Convert to fraction form
    1,868,946,148.80/2,803,419,223.20 = 778,287,499.20/x
  3. Step 3: Cross multiply
    1,868,946,148.80x = 2,803,419,223.20 × 778,287,499.20
  4. Step 4: Simplify right side
    1,868,946,148.80x = 2,181,866,136,433,534,720
  5. Step 5: Solve for x
    x = 2,181,866,136,433,534,720/1,868,946,148.80
  6. Step 6: Final answer
    x = 1,167,431,248.80

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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.