Home / 513,039,599.46-707,975,679.78-278,085,215.40

Finding the Fourth Proportional to 513,039,599.46, 707,975,679.78 and 278,085,215.40

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Solution

The fourth proportional to 513,039,599.46, 707,975,679.78 and 278,085,215.40 is: 383,747,316.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,039,599.46 : 707,975,679.78 = 278,085,215.40 : x
  2. Step 2: Convert to fraction form
    513,039,599.46/707,975,679.78 = 278,085,215.40/x
  3. Step 3: Cross multiply
    513,039,599.46x = 707,975,679.78 × 278,085,215.40
  4. Step 4: Simplify right side
    513,039,599.46x = 196,877,569,409,582,688
  5. Step 5: Solve for x
    x = 196,877,569,409,582,688/513,039,599.46
  6. Step 6: Final answer
    x = 383,747,316.22

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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.