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Finding the Fourth Proportional to 660,225.84, 911,112.56 and 358,419.84

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Solution

The fourth proportional to 660,225.84, 911,112.56 and 358,419.84 is: 494,619.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,225.84 : 911,112.56 = 358,419.84 : x
  2. Step 2: Convert to fraction form
    660,225.84/911,112.56 = 358,419.84/x
  3. Step 3: Cross multiply
    660,225.84x = 911,112.56 × 358,419.84
  4. Step 4: Simplify right side
    660,225.84x = 326,560,817,977.19
  5. Step 5: Solve for x
    x = 326,560,817,977.19/660,225.84
  6. Step 6: Final answer
    x = 494,619.87

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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.