Home / 513,783,031-709,020,952.68-278,833,630.72

Finding the Fourth Proportional to 513,783,031, 709,020,952.68 and 278,833,630.72

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Solution

The fourth proportional to 513,783,031, 709,020,952.68 and 278,833,630.72 is: 384,790,611.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,783,031 : 709,020,952.68 = 278,833,630.72 : x
  2. Step 2: Convert to fraction form
    513,783,031/709,020,952.68 = 278,833,630.72/x
  3. Step 3: Cross multiply
    513,783,031x = 709,020,952.68 × 278,833,630.72
  4. Step 4: Simplify right side
    513,783,031x = 197,698,886,492,317,728
  5. Step 5: Solve for x
    x = 197,698,886,492,317,728/513,783,031
  6. Step 6: Final answer
    x = 384,790,611.14

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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.