Home / 12,779,605,418.40-17,636,536,730.16-7,140,958,146.72

Finding the Fourth Proportional to 12,779,605,418.40, 17,636,536,730.16 and 7,140,958,146.72

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Solution

The fourth proportional to 12,779,605,418.40, 17,636,536,730.16 and 7,140,958,146.72 is: 9,854,902,911.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779,605,418.40 : 17,636,536,730.16 = 7,140,958,146.72 : x
  2. Step 2: Convert to fraction form
    12,779,605,418.40/17,636,536,730.16 = 7,140,958,146.72/x
  3. Step 3: Cross multiply
    12,779,605,418.40x = 17,636,536,730.16 × 7,140,958,146.72
  4. Step 4: Simplify right side
    12,779,605,418.40x = 125,941,770,643,162,562,560
  5. Step 5: Solve for x
    x = 125,941,770,643,162,562,560/12,779,605,418.40
  6. Step 6: Final answer
    x = 9,854,902,911.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.