Home / 513,783,033-709,020,955.44-278,833,632.72

Finding the Fourth Proportional to 513,783,033, 709,020,955.44 and 278,833,632.72

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Solution

The fourth proportional to 513,783,033, 709,020,955.44 and 278,833,632.72 is: 384,790,613.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,783,033 : 709,020,955.44 = 278,833,632.72 : x
  2. Step 2: Convert to fraction form
    513,783,033/709,020,955.44 = 278,833,632.72/x
  3. Step 3: Cross multiply
    513,783,033x = 709,020,955.44 × 278,833,632.72
  4. Step 4: Simplify right side
    513,783,033x = 197,698,888,679,940,480
  5. Step 5: Solve for x
    x = 197,698,888,679,940,480/513,783,033
  6. Step 6: Final answer
    x = 384,790,613.90

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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.