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Finding the Fourth Proportional to 890,647.80, 1,334,805.30 and 790,337.40

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Solution

The fourth proportional to 890,647.80, 1,334,805.30 and 790,337.40 is: 1,184,471.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,647.80 : 1,334,805.30 = 790,337.40 : x
  2. Step 2: Convert to fraction form
    890,647.80/1,334,805.30 = 790,337.40/x
  3. Step 3: Cross multiply
    890,647.80x = 1,334,805.30 × 790,337.40
  4. Step 4: Simplify right side
    890,647.80x = 1,054,946,550,308.22
  5. Step 5: Solve for x
    x = 1,054,946,550,308.22/890,647.80
  6. Step 6: Final answer
    x = 1,184,471.07

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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.