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Finding the Fourth Proportional to 804,978.70, 1,208,245.65 and 490,050.70

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Solution

The fourth proportional to 804,978.70, 1,208,245.65 and 490,050.70 is: 735,549.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,978.70 : 1,208,245.65 = 490,050.70 : x
  2. Step 2: Convert to fraction form
    804,978.70/1,208,245.65 = 490,050.70/x
  3. Step 3: Cross multiply
    804,978.70x = 1,208,245.65 × 490,050.70
  4. Step 4: Simplify right side
    804,978.70x = 592,101,626,554.46
  5. Step 5: Solve for x
    x = 592,101,626,554.46/804,978.70
  6. Step 6: Final answer
    x = 735,549.43

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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.