Home / 709,485.83-979,113.21-403,554.32

Finding the Fourth Proportional to 709,485.83, 979,113.21 and 403,554.32

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Solution

The fourth proportional to 709,485.83, 979,113.21 and 403,554.32 is: 556,917.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,485.83 : 979,113.21 = 403,554.32 : x
  2. Step 2: Convert to fraction form
    709,485.83/979,113.21 = 403,554.32/x
  3. Step 3: Cross multiply
    709,485.83x = 979,113.21 × 403,554.32
  4. Step 4: Simplify right side
    709,485.83x = 395,125,365,664.57
  5. Step 5: Solve for x
    x = 395,125,365,664.57/709,485.83
  6. Step 6: Final answer
    x = 556,917.91

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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.