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Finding the Fourth Proportional to 612,354.70, 845,063.58 and 340,412.14

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Solution

The fourth proportional to 612,354.70, 845,063.58 and 340,412.14 is: 469,776.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,354.70 : 845,063.58 = 340,412.14 : x
  2. Step 2: Convert to fraction form
    612,354.70/845,063.58 = 340,412.14/x
  3. Step 3: Cross multiply
    612,354.70x = 845,063.58 × 340,412.14
  4. Step 4: Simplify right side
    612,354.70x = 287,669,901,703.86
  5. Step 5: Solve for x
    x = 287,669,901,703.86/612,354.70
  6. Step 6: Final answer
    x = 469,776.59

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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.