Home / 425,718,643.70-638,577,965.55-323,681,971.70

Finding the Fourth Proportional to 425,718,643.70, 638,577,965.55 and 323,681,971.70

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Solution

The fourth proportional to 425,718,643.70, 638,577,965.55 and 323,681,971.70 is: 485,522,957.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,718,643.70 : 638,577,965.55 = 323,681,971.70 : x
  2. Step 2: Convert to fraction form
    425,718,643.70/638,577,965.55 = 323,681,971.70/x
  3. Step 3: Cross multiply
    425,718,643.70x = 638,577,965.55 × 323,681,971.70
  4. Step 4: Simplify right side
    425,718,643.70x = 206,696,174,973,398,656
  5. Step 5: Solve for x
    x = 206,696,174,973,398,656/425,718,643.70
  6. Step 6: Final answer
    x = 485,522,957.55

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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.