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Finding the Fourth Proportional to 589,492.60, 882,489.30 and 390,038.20

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Solution

The fourth proportional to 589,492.60, 882,489.30 and 390,038.20 is: 583,899.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,492.60 : 882,489.30 = 390,038.20 : x
  2. Step 2: Convert to fraction form
    589,492.60/882,489.30 = 390,038.20/x
  3. Step 3: Cross multiply
    589,492.60x = 882,489.30 × 390,038.20
  4. Step 4: Simplify right side
    589,492.60x = 344,204,538,091.26
  5. Step 5: Solve for x
    x = 344,204,538,091.26/589,492.60
  6. Step 6: Final answer
    x = 583,899.68

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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.