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Finding the Fourth Proportional to 885,735,973.20, 1,328,603,959.80 and 880,634,139.60

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Solution

The fourth proportional to 885,735,973.20, 1,328,603,959.80 and 880,634,139.60 is: 1,320,951,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,735,973.20 : 1,328,603,959.80 = 880,634,139.60 : x
  2. Step 2: Convert to fraction form
    885,735,973.20/1,328,603,959.80 = 880,634,139.60/x
  3. Step 3: Cross multiply
    885,735,973.20x = 1,328,603,959.80 × 880,634,139.60
  4. Step 4: Simplify right side
    885,735,973.20x = 1,170,014,005,007,625,984
  5. Step 5: Solve for x
    x = 1,170,014,005,007,625,984/885,735,973.20
  6. Step 6: Final answer
    x = 1,320,951,209.40

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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.