Home / 520,540,640.80-718,353,413.67-285,587,031.76

Finding the Fourth Proportional to 520,540,640.80, 718,353,413.67 and 285,587,031.76

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Solution

The fourth proportional to 520,540,640.80, 718,353,413.67 and 285,587,031.76 is: 394,114,124.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,540,640.80 : 718,353,413.67 = 285,587,031.76 : x
  2. Step 2: Convert to fraction form
    520,540,640.80/718,353,413.67 = 285,587,031.76/x
  3. Step 3: Cross multiply
    520,540,640.80x = 718,353,413.67 × 285,587,031.76
  4. Step 4: Simplify right side
    520,540,640.80x = 205,152,419,164,678,688
  5. Step 5: Solve for x
    x = 205,152,419,164,678,688/520,540,640.80
  6. Step 6: Final answer
    x = 394,114,124.98

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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.