Home / 909,609,317.94-1,255,264,618.01-491,921,594.58

Finding the Fourth Proportional to 909,609,317.94, 1,255,264,618.01 and 491,921,594.58

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Solution

The fourth proportional to 909,609,317.94, 1,255,264,618.01 and 491,921,594.58 is: 678,853,833.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,609,317.94 : 1,255,264,618.01 = 491,921,594.58 : x
  2. Step 2: Convert to fraction form
    909,609,317.94/1,255,264,618.01 = 491,921,594.58/x
  3. Step 3: Cross multiply
    909,609,317.94x = 1,255,264,618.01 × 491,921,594.58
  4. Step 4: Simplify right side
    909,609,317.94x = 617,491,772,508,874,240
  5. Step 5: Solve for x
    x = 617,491,772,508,874,240/909,609,317.94
  6. Step 6: Final answer
    x = 678,853,833.54

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Double scale
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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.