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Finding the Fourth Proportional to 589,491.60, 882,487.80 and 390,037.20

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Solution

The fourth proportional to 589,491.60, 882,487.80 and 390,037.20 is: 583,898.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,491.60 : 882,487.80 = 390,037.20 : x
  2. Step 2: Convert to fraction form
    589,491.60/882,487.80 = 390,037.20/x
  3. Step 3: Cross multiply
    589,491.60x = 882,487.80 × 390,037.20
  4. Step 4: Simplify right side
    589,491.60x = 344,203,070,546.16
  5. Step 5: Solve for x
    x = 344,203,070,546.16/589,491.60
  6. Step 6: Final answer
    x = 583,898.18

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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.