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Finding the Fourth Proportional to 7,920,804,678.20, 11,881,207,017.30 and 7,920,804,678.20

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Solution

The fourth proportional to 7,920,804,678.20, 11,881,207,017.30 and 7,920,804,678.20 is: 11,881,207,017.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920,804,678.20 : 11,881,207,017.30 = 7,920,804,678.20 : x
  2. Step 2: Convert to fraction form
    7,920,804,678.20/11,881,207,017.30 = 7,920,804,678.20/x
  3. Step 3: Cross multiply
    7,920,804,678.20x = 11,881,207,017.30 × 7,920,804,678.20
  4. Step 4: Simplify right side
    7,920,804,678.20x = 94,108,720,125,292,494,848
  5. Step 5: Solve for x
    x = 94,108,720,125,292,494,848/7,920,804,678.20
  6. Step 6: Final answer
    x = 11,881,207,017.30

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1.5x scale

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.