Home / 812,659.89-1,214,047.71-526,015.20

Finding the Fourth Proportional to 812,659.89, 1,214,047.71 and 526,015.20

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Solution

The fourth proportional to 812,659.89, 1,214,047.71 and 526,015.20 is: 785,823.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,659.89 : 1,214,047.71 = 526,015.20 : x
  2. Step 2: Convert to fraction form
    812,659.89/1,214,047.71 = 526,015.20/x
  3. Step 3: Cross multiply
    812,659.89x = 1,214,047.71 × 526,015.20
  4. Step 4: Simplify right side
    812,659.89x = 638,607,548,985.19
  5. Step 5: Solve for x
    x = 638,607,548,985.19/812,659.89
  6. Step 6: Final answer
    x = 785,823.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.