Home / 515,564,571.86-711,539,692.80-289,540,701.08

Finding the Fourth Proportional to 515,564,571.86, 711,539,692.80 and 289,540,701.08

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Solution

The fourth proportional to 515,564,571.86, 711,539,692.80 and 289,540,701.08 is: 399,600,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,564,571.86 : 711,539,692.80 = 289,540,701.08 : x
  2. Step 2: Convert to fraction form
    515,564,571.86/711,539,692.80 = 289,540,701.08/x
  3. Step 3: Cross multiply
    515,564,571.86x = 711,539,692.80 × 289,540,701.08
  4. Step 4: Simplify right side
    515,564,571.86x = 206,019,701,499,559,808
  5. Step 5: Solve for x
    x = 206,019,701,499,559,808/515,564,571.86
  6. Step 6: Final answer
    x = 399,600,191.22

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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.