Home / 947,728.30-1,421,667.24-316,644.34

Finding the Fourth Proportional to 947,728.30, 1,421,667.24 and 316,644.34

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Solution

The fourth proportional to 947,728.30, 1,421,667.24 and 316,644.34 is: 474,991.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,728.30 : 1,421,667.24 = 316,644.34 : x
  2. Step 2: Convert to fraction form
    947,728.30/1,421,667.24 = 316,644.34/x
  3. Step 3: Cross multiply
    947,728.30x = 1,421,667.24 × 316,644.34
  4. Step 4: Simplify right side
    947,728.30x = 450,162,884,909.42
  5. Step 5: Solve for x
    x = 450,162,884,909.42/947,728.30
  6. Step 6: Final answer
    x = 474,991.50

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Double scale
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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.