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Finding the Fourth Proportional to 553,341.80, 830,012.70 and 541,677.80

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Solution

The fourth proportional to 553,341.80, 830,012.70 and 541,677.80 is: 812,516.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,341.80 : 830,012.70 = 541,677.80 : x
  2. Step 2: Convert to fraction form
    553,341.80/830,012.70 = 541,677.80/x
  3. Step 3: Cross multiply
    553,341.80x = 830,012.70 × 541,677.80
  4. Step 4: Simplify right side
    553,341.80x = 449,599,453,308.06
  5. Step 5: Solve for x
    x = 449,599,453,308.06/553,341.80
  6. Step 6: Final answer
    x = 812,516.70

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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.