Home / 520,520,368.95-780,909,783.27-258,327,975.63

Finding the Fourth Proportional to 520,520,368.95, 780,909,783.27 and 258,327,975.63

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Solution

The fourth proportional to 520,520,368.95, 780,909,783.27 and 258,327,975.63 is: 387,556,098.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,520,368.95 : 780,909,783.27 = 258,327,975.63 : x
  2. Step 2: Convert to fraction form
    520,520,368.95/780,909,783.27 = 258,327,975.63/x
  3. Step 3: Cross multiply
    520,520,368.95x = 780,909,783.27 × 258,327,975.63
  4. Step 4: Simplify right side
    520,520,368.95x = 201,730,843,461,801,120
  5. Step 5: Solve for x
    x = 201,730,843,461,801,120/520,520,368.95
  6. Step 6: Final answer
    x = 387,556,098.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.