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Finding the Fourth Proportional to 660,465.63, 911,442.78 and 358,659.63

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Solution

The fourth proportional to 660,465.63, 911,442.78 and 358,659.63 is: 494,950.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,465.63 : 911,442.78 = 358,659.63 : x
  2. Step 2: Convert to fraction form
    660,465.63/911,442.78 = 358,659.63/x
  3. Step 3: Cross multiply
    660,465.63x = 911,442.78 × 358,659.63
  4. Step 4: Simplify right side
    660,465.63x = 326,897,730,240.97
  5. Step 5: Solve for x
    x = 326,897,730,240.97/660,465.63
  6. Step 6: Final answer
    x = 494,950.40

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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.