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Finding the Fourth Proportional to 662,670.80, 914,825.16 and 448,936.40

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Solution

The fourth proportional to 662,670.80, 914,825.16 and 448,936.40 is: 619,762.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,670.80 : 914,825.16 = 448,936.40 : x
  2. Step 2: Convert to fraction form
    662,670.80/914,825.16 = 448,936.40/x
  3. Step 3: Cross multiply
    662,670.80x = 914,825.16 × 448,936.40
  4. Step 4: Simplify right side
    662,670.80x = 410,698,313,959.82
  5. Step 5: Solve for x
    x = 410,698,313,959.82/662,670.80
  6. Step 6: Final answer
    x = 619,762.20

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1.5x scale

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.