Home / 396,492,428.32-547,127,472.50-229,239,420.40

Finding the Fourth Proportional to 396,492,428.32, 547,127,472.50 and 229,239,420.40

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Solution

The fourth proportional to 396,492,428.32, 547,127,472.50 and 229,239,420.40 is: 316,331,853.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,492,428.32 : 547,127,472.50 = 229,239,420.40 : x
  2. Step 2: Convert to fraction form
    396,492,428.32/547,127,472.50 = 229,239,420.40/x
  3. Step 3: Cross multiply
    396,492,428.32x = 547,127,472.50 × 229,239,420.40
  4. Step 4: Simplify right side
    396,492,428.32x = 125,423,184,680,816,944
  5. Step 5: Solve for x
    x = 125,423,184,680,816,944/396,492,428.32
  6. Step 6: Final answer
    x = 316,331,853.33

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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.