Home / 489,920,999.40-734,881,499.10-217,823,207.40

Finding the Fourth Proportional to 489,920,999.40, 734,881,499.10 and 217,823,207.40

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Solution

The fourth proportional to 489,920,999.40, 734,881,499.10 and 217,823,207.40 is: 326,734,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,920,999.40 : 734,881,499.10 = 217,823,207.40 : x
  2. Step 2: Convert to fraction form
    489,920,999.40/734,881,499.10 = 217,823,207.40/x
  3. Step 3: Cross multiply
    489,920,999.40x = 734,881,499.10 × 217,823,207.40
  4. Step 4: Simplify right side
    489,920,999.40x = 160,074,245,192,882,208
  5. Step 5: Solve for x
    x = 160,074,245,192,882,208/489,920,999.40
  6. Step 6: Final answer
    x = 326,734,811.10

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1.5x scale

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.