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Finding the Fourth Proportional to 786,502.92, 1,085,327.71 and 437,634.05

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Solution

The fourth proportional to 786,502.92, 1,085,327.71 and 437,634.05 is: 603,909.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,502.92 : 1,085,327.71 = 437,634.05 : x
  2. Step 2: Convert to fraction form
    786,502.92/1,085,327.71 = 437,634.05/x
  3. Step 3: Cross multiply
    786,502.92x = 1,085,327.71 × 437,634.05
  4. Step 4: Simplify right side
    786,502.92x = 474,976,354,783.80
  5. Step 5: Solve for x
    x = 474,976,354,783.80/786,502.92
  6. Step 6: Final answer
    x = 603,909.21

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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.