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Finding the Fourth Proportional to 911,051.40, 1,366,577.10 and 412,415.40

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Solution

The fourth proportional to 911,051.40, 1,366,577.10 and 412,415.40 is: 618,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,051.40 : 1,366,577.10 = 412,415.40 : x
  2. Step 2: Convert to fraction form
    911,051.40/1,366,577.10 = 412,415.40/x
  3. Step 3: Cross multiply
    911,051.40x = 1,366,577.10 × 412,415.40
  4. Step 4: Simplify right side
    911,051.40x = 563,597,441,327.34
  5. Step 5: Solve for x
    x = 563,597,441,327.34/911,051.40
  6. Step 6: Final answer
    x = 618,623.10

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1.5x scale

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.