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Finding the Fourth Proportional to 538,440.40, 808,316.70 and 534,503.80

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Solution

The fourth proportional to 538,440.40, 808,316.70 and 534,503.80 is: 802,407.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,440.40 : 808,316.70 = 534,503.80 : x
  2. Step 2: Convert to fraction form
    538,440.40/808,316.70 = 534,503.80/x
  3. Step 3: Cross multiply
    538,440.40x = 808,316.70 × 534,503.80
  4. Step 4: Simplify right side
    538,440.40x = 432,048,347,753.46
  5. Step 5: Solve for x
    x = 432,048,347,753.46/538,440.40
  6. Step 6: Final answer
    x = 802,407.00

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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.