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Finding the Fourth Proportional to 570,257.51, 786,867.71 and 328,492.88

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Solution

The fourth proportional to 570,257.51, 786,867.71 and 328,492.88 is: 453,269.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,257.51 : 786,867.71 = 328,492.88 : x
  2. Step 2: Convert to fraction form
    570,257.51/786,867.71 = 328,492.88/x
  3. Step 3: Cross multiply
    570,257.51x = 786,867.71 × 328,492.88
  4. Step 4: Simplify right side
    570,257.51x = 258,480,434,660.10
  5. Step 5: Solve for x
    x = 258,480,434,660.10/570,257.51
  6. Step 6: Final answer
    x = 453,269.67

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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.