Home / 12,855,492,137.04-17,740,507,851.36-7,216,706,497.92

Finding the Fourth Proportional to 12,855,492,137.04, 17,740,507,851.36 and 7,216,706,497.92

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Solution

The fourth proportional to 12,855,492,137.04, 17,740,507,851.36 and 7,216,706,497.92 is: 9,959,014,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855,492,137.04 : 17,740,507,851.36 = 7,216,706,497.92 : x
  2. Step 2: Convert to fraction form
    12,855,492,137.04/17,740,507,851.36 = 7,216,706,497.92/x
  3. Step 3: Cross multiply
    12,855,492,137.04x = 17,740,507,851.36 × 7,216,706,497.92
  4. Step 4: Simplify right side
    12,855,492,137.04x = 128,028,038,287,310,487,552
  5. Step 5: Solve for x
    x = 128,028,038,287,310,487,552/12,855,492,137.04
  6. Step 6: Final answer
    x = 9,959,014,942.60

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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.