Home / 1,211,134,130.80-1,817,551,501.80-521,536,289.20

Finding the Fourth Proportional to 1,211,134,130.80, 1,817,551,501.80 and 521,536,289.20

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Solution

The fourth proportional to 1,211,134,130.80, 1,817,551,501.80 and 521,536,289.20 is: 782,670,590.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,134,130.80 : 1,817,551,501.80 = 521,536,289.20 : x
  2. Step 2: Convert to fraction form
    1,211,134,130.80/1,817,551,501.80 = 521,536,289.20/x
  3. Step 3: Cross multiply
    1,211,134,130.80x = 1,817,551,501.80 × 521,536,289.20
  4. Step 4: Simplify right side
    1,211,134,130.80x = 947,919,065,678,659,072
  5. Step 5: Solve for x
    x = 947,919,065,678,659,072/1,211,134,130.80
  6. Step 6: Final answer
    x = 782,670,590.79

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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.