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Finding the Fourth Proportional to 768,656.70, 1,153,313.10 and 369,091.80

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Solution

The fourth proportional to 768,656.70, 1,153,313.10 and 369,091.80 is: 553,795.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,656.70 : 1,153,313.10 = 369,091.80 : x
  2. Step 2: Convert to fraction form
    768,656.70/1,153,313.10 = 369,091.80/x
  3. Step 3: Cross multiply
    768,656.70x = 1,153,313.10 × 369,091.80
  4. Step 4: Simplify right side
    768,656.70x = 425,678,408,042.58
  5. Step 5: Solve for x
    x = 425,678,408,042.58/768,656.70
  6. Step 6: Final answer
    x = 553,795.22

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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.