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Finding the Fourth Proportional to 612,484.74, 845,267.13 and 340,613.37

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Solution

The fourth proportional to 612,484.74, 845,267.13 and 340,613.37 is: 470,067.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,484.74 : 845,267.13 = 340,613.37 : x
  2. Step 2: Convert to fraction form
    612,484.74/845,267.13 = 340,613.37/x
  3. Step 3: Cross multiply
    612,484.74x = 845,267.13 × 340,613.37
  4. Step 4: Simplify right side
    612,484.74x = 287,909,285,699.53
  5. Step 5: Solve for x
    x = 287,909,285,699.53/612,484.74
  6. Step 6: Final answer
    x = 470,067.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.