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Finding the Fourth Proportional to 657,345.20, 985,441.80 and 446,298.80

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Solution

The fourth proportional to 657,345.20, 985,441.80 and 446,298.80 is: 669,057.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,345.20 : 985,441.80 = 446,298.80 : x
  2. Step 2: Convert to fraction form
    657,345.20/985,441.80 = 446,298.80/x
  3. Step 3: Cross multiply
    657,345.20x = 985,441.80 × 446,298.80
  4. Step 4: Simplify right side
    657,345.20x = 439,801,492,809.84
  5. Step 5: Solve for x
    x = 439,801,492,809.84/657,345.20
  6. Step 6: Final answer
    x = 669,057.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.