Home / 1,212,326,999.40-1,818,490,499.10-394,439,300.40

Finding the Fourth Proportional to 1,212,326,999.40, 1,818,490,499.10 and 394,439,300.40

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Solution

The fourth proportional to 1,212,326,999.40, 1,818,490,499.10 and 394,439,300.40 is: 591,658,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,326,999.40 : 1,818,490,499.10 = 394,439,300.40 : x
  2. Step 2: Convert to fraction form
    1,212,326,999.40/1,818,490,499.10 = 394,439,300.40/x
  3. Step 3: Cross multiply
    1,212,326,999.40x = 1,818,490,499.10 × 394,439,300.40
  4. Step 4: Simplify right side
    1,212,326,999.40x = 717,284,120,249,050,752
  5. Step 5: Solve for x
    x = 717,284,120,249,050,752/1,212,326,999.40
  6. Step 6: Final answer
    x = 591,658,950.60

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1.5x scale

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.