Home / 767,585.60-1,059,244.80-428,111.36

Finding the Fourth Proportional to 767,585.60, 1,059,244.80 and 428,111.36

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Solution

The fourth proportional to 767,585.60, 1,059,244.80 and 428,111.36 is: 590,780.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,585.60 : 1,059,244.80 = 428,111.36 : x
  2. Step 2: Convert to fraction form
    767,585.60/1,059,244.80 = 428,111.36/x
  3. Step 3: Cross multiply
    767,585.60x = 1,059,244.80 × 428,111.36
  4. Step 4: Simplify right side
    767,585.60x = 453,474,731,900.93
  5. Step 5: Solve for x
    x = 453,474,731,900.93/767,585.60
  6. Step 6: Final answer
    x = 590,780.67

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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.