Home / 810,152.89-1,118,010.97-470,643.01

Finding the Fourth Proportional to 810,152.89, 1,118,010.97 and 470,643.01

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Solution

The fourth proportional to 810,152.89, 1,118,010.97 and 470,643.01 is: 649,487.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,152.89 : 1,118,010.97 = 470,643.01 : x
  2. Step 2: Convert to fraction form
    810,152.89/1,118,010.97 = 470,643.01/x
  3. Step 3: Cross multiply
    810,152.89x = 1,118,010.97 × 470,643.01
  4. Step 4: Simplify right side
    810,152.89x = 526,184,048,133.82
  5. Step 5: Solve for x
    x = 526,184,048,133.82/810,152.89
  6. Step 6: Final answer
    x = 649,487.34

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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.