Home / 647,212,969.44-970,713,162.72-278,648,681.04

Finding the Fourth Proportional to 647,212,969.44, 970,713,162.72 and 278,648,681.04

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Solution

The fourth proportional to 647,212,969.44, 970,713,162.72 and 278,648,681.04 is: 417,927,259.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,212,969.44 : 970,713,162.72 = 278,648,681.04 : x
  2. Step 2: Convert to fraction form
    647,212,969.44/970,713,162.72 = 278,648,681.04/x
  3. Step 3: Cross multiply
    647,212,969.44x = 970,713,162.72 × 278,648,681.04
  4. Step 4: Simplify right side
    647,212,969.44x = 270,487,942,460,094,912
  5. Step 5: Solve for x
    x = 270,487,942,460,094,912/647,212,969.44
  6. Step 6: Final answer
    x = 417,927,259.24

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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.