Home / 399,178,643.40-598,767,965.10-291,683,219.40

Finding the Fourth Proportional to 399,178,643.40, 598,767,965.10 and 291,683,219.40

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Solution

The fourth proportional to 399,178,643.40, 598,767,965.10 and 291,683,219.40 is: 437,524,829.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,178,643.40 : 598,767,965.10 = 291,683,219.40 : x
  2. Step 2: Convert to fraction form
    399,178,643.40/598,767,965.10 = 291,683,219.40/x
  3. Step 3: Cross multiply
    399,178,643.40x = 598,767,965.10 × 291,683,219.40
  4. Step 4: Simplify right side
    399,178,643.40x = 174,650,567,733,954,848
  5. Step 5: Solve for x
    x = 174,650,567,733,954,848/399,178,643.40
  6. Step 6: Final answer
    x = 437,524,829.10

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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.