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Finding the Fourth Proportional to 612,678.36, 845,488.62 and 344,406.36

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Solution

The fourth proportional to 612,678.36, 845,488.62 and 344,406.36 is: 475,276.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,678.36 : 845,488.62 = 344,406.36 : x
  2. Step 2: Convert to fraction form
    612,678.36/845,488.62 = 344,406.36/x
  3. Step 3: Cross multiply
    612,678.36x = 845,488.62 × 344,406.36
  4. Step 4: Simplify right side
    612,678.36x = 291,191,658,035.62
  5. Step 5: Solve for x
    x = 291,191,658,035.62/612,678.36
  6. Step 6: Final answer
    x = 475,276.55

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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.