Home / 520,014,795.90-780,221,259.45-511,853,106.30

Finding the Fourth Proportional to 520,014,795.90, 780,221,259.45 and 511,853,106.30

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Solution

The fourth proportional to 520,014,795.90, 780,221,259.45 and 511,853,106.30 is: 767,975,600.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,014,795.90 : 780,221,259.45 = 511,853,106.30 : x
  2. Step 2: Convert to fraction form
    520,014,795.90/780,221,259.45 = 511,853,106.30/x
  3. Step 3: Cross multiply
    520,014,795.90x = 780,221,259.45 × 511,853,106.30
  4. Step 4: Simplify right side
    520,014,795.90x = 399,358,675,250,780,736
  5. Step 5: Solve for x
    x = 399,358,675,250,780,736/520,014,795.90
  6. Step 6: Final answer
    x = 767,975,600.69

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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.