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Finding the Fourth Proportional to 538,909.30, 808,363.95 and 444,430.90

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Solution

The fourth proportional to 538,909.30, 808,363.95 and 444,430.90 is: 666,646.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,909.30 : 808,363.95 = 444,430.90 : x
  2. Step 2: Convert to fraction form
    538,909.30/808,363.95 = 444,430.90/x
  3. Step 3: Cross multiply
    538,909.30x = 808,363.95 × 444,430.90
  4. Step 4: Simplify right side
    538,909.30x = 359,261,917,826.06
  5. Step 5: Solve for x
    x = 359,261,917,826.06/538,909.30
  6. Step 6: Final answer
    x = 666,646.35

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Double scale
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Similar ratio
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1.5x scale

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.