Home / 515,564,554.10-711,539,668.31-289,540,683.32

Finding the Fourth Proportional to 515,564,554.10, 711,539,668.31 and 289,540,683.32

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Solution

The fourth proportional to 515,564,554.10, 711,539,668.31 and 289,540,683.32 is: 399,600,166.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,564,554.10 : 711,539,668.31 = 289,540,683.32 : x
  2. Step 2: Convert to fraction form
    515,564,554.10/711,539,668.31 = 289,540,683.32/x
  3. Step 3: Cross multiply
    515,564,554.10x = 711,539,668.31 × 289,540,683.32
  4. Step 4: Simplify right side
    515,564,554.10x = 206,019,681,766,758,144
  5. Step 5: Solve for x
    x = 206,019,681,766,758,144/515,564,554.10
  6. Step 6: Final answer
    x = 399,600,166.71

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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.