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Finding the Fourth Proportional to 641,642.94, 885,250.35 and 369,703.80

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Solution

The fourth proportional to 641,642.94, 885,250.35 and 369,703.80 is: 510,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,642.94 : 885,250.35 = 369,703.80 : x
  2. Step 2: Convert to fraction form
    641,642.94/885,250.35 = 369,703.80/x
  3. Step 3: Cross multiply
    641,642.94x = 885,250.35 × 369,703.80
  4. Step 4: Simplify right side
    641,642.94x = 327,280,418,346.33
  5. Step 5: Solve for x
    x = 327,280,418,346.33/641,642.94
  6. Step 6: Final answer
    x = 510,066.27

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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.