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Finding the Fourth Proportional to 902,407.80, 1,353,611.70 and 804,430.20

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Solution

The fourth proportional to 902,407.80, 1,353,611.70 and 804,430.20 is: 1,206,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,407.80 : 1,353,611.70 = 804,430.20 : x
  2. Step 2: Convert to fraction form
    902,407.80/1,353,611.70 = 804,430.20/x
  3. Step 3: Cross multiply
    902,407.80x = 1,353,611.70 × 804,430.20
  4. Step 4: Simplify right side
    902,407.80x = 1,088,886,130,553.34
  5. Step 5: Solve for x
    x = 1,088,886,130,553.34/902,407.80
  6. Step 6: Final answer
    x = 1,206,645.30

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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.