Home / 513,616,724.52-769,971,585.56-392,986,703.40

Finding the Fourth Proportional to 513,616,724.52, 769,971,585.56 and 392,986,703.40

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Solution

The fourth proportional to 513,616,724.52, 769,971,585.56 and 392,986,703.40 is: 589,133,064.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,616,724.52 : 769,971,585.56 = 392,986,703.40 : x
  2. Step 2: Convert to fraction form
    513,616,724.52/769,971,585.56 = 392,986,703.40/x
  3. Step 3: Cross multiply
    513,616,724.52x = 769,971,585.56 × 392,986,703.40
  4. Step 4: Simplify right side
    513,616,724.52x = 302,588,595,120,895,424
  5. Step 5: Solve for x
    x = 302,588,595,120,895,424/513,616,724.52
  6. Step 6: Final answer
    x = 589,133,064.94

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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.