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Finding the Fourth Proportional to 1,257,768,970.80, 1,888,354,067.40 and 798,603,946.80

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Solution

The fourth proportional to 1,257,768,970.80, 1,888,354,067.40 and 798,603,946.80 is: 1,198,985,701.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,768,970.80 : 1,888,354,067.40 = 798,603,946.80 : x
  2. Step 2: Convert to fraction form
    1,257,768,970.80/1,888,354,067.40 = 798,603,946.80/x
  3. Step 3: Cross multiply
    1,257,768,970.80x = 1,888,354,067.40 × 798,603,946.80
  4. Step 4: Simplify right side
    1,257,768,970.80x = 1,508,047,011,181,473,280
  5. Step 5: Solve for x
    x = 1,508,047,011,181,473,280/1,257,768,970.80
  6. Step 6: Final answer
    x = 1,198,985,701.02

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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.