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Finding the Fourth Proportional to 660,071.46, 910,874.25 and 358,258.98

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Solution

The fourth proportional to 660,071.46, 910,874.25 and 358,258.98 is: 494,384.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,071.46 : 910,874.25 = 358,258.98 : x
  2. Step 2: Convert to fraction form
    660,071.46/910,874.25 = 358,258.98/x
  3. Step 3: Cross multiply
    660,071.46x = 910,874.25 × 358,258.98
  4. Step 4: Simplify right side
    660,071.46x = 326,328,879,713.27
  5. Step 5: Solve for x
    x = 326,328,879,713.27/660,071.46
  6. Step 6: Final answer
    x = 494,384.17

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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.