Home / 621,985,981.31-858,335,003.35-339,728,363.40

Finding the Fourth Proportional to 621,985,981.31, 858,335,003.35 and 339,728,363.40

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Solution

The fourth proportional to 621,985,981.31, 858,335,003.35 and 339,728,363.40 is: 468,822,055.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,985,981.31 : 858,335,003.35 = 339,728,363.40 : x
  2. Step 2: Convert to fraction form
    621,985,981.31/858,335,003.35 = 339,728,363.40/x
  3. Step 3: Cross multiply
    621,985,981.31x = 858,335,003.35 × 339,728,363.40
  4. Step 4: Simplify right side
    621,985,981.31x = 291,600,745,936,179,648
  5. Step 5: Solve for x
    x = 291,600,745,936,179,648/621,985,981.31
  6. Step 6: Final answer
    x = 468,822,055.00

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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.