Home / 712,407,965.31-1,068,746,190.12-269,883,189.45

Finding the Fourth Proportional to 712,407,965.31, 1,068,746,190.12 and 269,883,189.45

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Solution

The fourth proportional to 712,407,965.31, 1,068,746,190.12 and 269,883,189.45 is: 404,875,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,407,965.31 : 1,068,746,190.12 = 269,883,189.45 : x
  2. Step 2: Convert to fraction form
    712,407,965.31/1,068,746,190.12 = 269,883,189.45/x
  3. Step 3: Cross multiply
    712,407,965.31x = 1,068,746,190.12 × 269,883,189.45
  4. Step 4: Simplify right side
    712,407,965.31x = 288,436,630,502,121,664
  5. Step 5: Solve for x
    x = 288,436,630,502,121,664/712,407,965.31
  6. Step 6: Final answer
    x = 404,875,639.45

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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.