Home / 520,042,880.34-717,668,421.66-281,895,864.51

Finding the Fourth Proportional to 520,042,880.34, 717,668,421.66 and 281,895,864.51

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Solution

The fourth proportional to 520,042,880.34, 717,668,421.66 and 281,895,864.51 is: 389,021,305.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,042,880.34 : 717,668,421.66 = 281,895,864.51 : x
  2. Step 2: Convert to fraction form
    520,042,880.34/717,668,421.66 = 281,895,864.51/x
  3. Step 3: Cross multiply
    520,042,880.34x = 717,668,421.66 × 281,895,864.51
  4. Step 4: Simplify right side
    520,042,880.34x = 202,307,760,155,372,896
  5. Step 5: Solve for x
    x = 202,307,760,155,372,896/520,042,880.34
  6. Step 6: Final answer
    x = 389,021,305.36

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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.