Home / 738,045.78-1,106,208.45-338,728.74

Finding the Fourth Proportional to 738,045.78, 1,106,208.45 and 338,728.74

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Solution

The fourth proportional to 738,045.78, 1,106,208.45 and 338,728.74 is: 507,698.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,045.78 : 1,106,208.45 = 338,728.74 : x
  2. Step 2: Convert to fraction form
    738,045.78/1,106,208.45 = 338,728.74/x
  3. Step 3: Cross multiply
    738,045.78x = 1,106,208.45 × 338,728.74
  4. Step 4: Simplify right side
    738,045.78x = 374,704,594,445.85
  5. Step 5: Solve for x
    x = 374,704,594,445.85/738,045.78
  6. Step 6: Final answer
    x = 507,698.31

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Double scale
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1.5x scale

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.