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Finding the Fourth Proportional to 1,124,505, 1,686,759.12 and 459,657

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Solution

The fourth proportional to 1,124,505, 1,686,759.12 and 459,657 is: 689,486.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,124,505 : 1,686,759.12 = 459,657 : x
  2. Step 2: Convert to fraction form
    1,124,505/1,686,759.12 = 459,657/x
  3. Step 3: Cross multiply
    1,124,505x = 1,686,759.12 × 459,657
  4. Step 4: Simplify right side
    1,124,505x = 775,330,636,821.84
  5. Step 5: Solve for x
    x = 775,330,636,821.84/1,124,505
  6. Step 6: Final answer
    x = 689,486.16

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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.