Home / 631,852.80-947,779.20-392,704.35

Finding the Fourth Proportional to 631,852.80, 947,779.20 and 392,704.35

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Solution

The fourth proportional to 631,852.80, 947,779.20 and 392,704.35 is: 589,056.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,852.80 : 947,779.20 = 392,704.35 : x
  2. Step 2: Convert to fraction form
    631,852.80/947,779.20 = 392,704.35/x
  3. Step 3: Cross multiply
    631,852.80x = 947,779.20 × 392,704.35
  4. Step 4: Simplify right side
    631,852.80x = 372,197,014,679.52
  5. Step 5: Solve for x
    x = 372,197,014,679.52/631,852.80
  6. Step 6: Final answer
    x = 589,056.53

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.