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Finding the Fourth Proportional to 671,113.30, 926,135.73 and 369,307.30

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Solution

The fourth proportional to 671,113.30, 926,135.73 and 369,307.30 is: 509,643.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,113.30 : 926,135.73 = 369,307.30 : x
  2. Step 2: Convert to fraction form
    671,113.30/926,135.73 = 369,307.30/x
  3. Step 3: Cross multiply
    671,113.30x = 926,135.73 × 369,307.30
  4. Step 4: Simplify right side
    671,113.30x = 342,028,685,879.83
  5. Step 5: Solve for x
    x = 342,028,685,879.83/671,113.30
  6. Step 6: Final answer
    x = 509,643.73

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Double scale
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Similar ratio
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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.