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Finding the Fourth Proportional to 660,582.63, 911,608.70 and 358,776.63

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Solution

The fourth proportional to 660,582.63, 911,608.70 and 358,776.63 is: 495,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,582.63 : 911,608.70 = 358,776.63 : x
  2. Step 2: Convert to fraction form
    660,582.63/911,608.70 = 358,776.63/x
  3. Step 3: Cross multiply
    660,582.63x = 911,608.70 × 358,776.63
  4. Step 4: Simplify right side
    660,582.63x = 327,063,897,264.68
  5. Step 5: Solve for x
    x = 327,063,897,264.68/660,582.63
  6. Step 6: Final answer
    x = 495,114.29

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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.