Home / 687,289,322.68-948,490,497.96-405,043,675.72

Finding the Fourth Proportional to 687,289,322.68, 948,490,497.96 and 405,043,675.72

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Solution

The fourth proportional to 687,289,322.68, 948,490,497.96 and 405,043,675.72 is: 558,978,679.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,289,322.68 : 948,490,497.96 = 405,043,675.72 : x
  2. Step 2: Convert to fraction form
    687,289,322.68/948,490,497.96 = 405,043,675.72/x
  3. Step 3: Cross multiply
    687,289,322.68x = 948,490,497.96 × 405,043,675.72
  4. Step 4: Simplify right side
    687,289,322.68x = 384,180,077,679,211,584
  5. Step 5: Solve for x
    x = 384,180,077,679,211,584/687,289,322.68
  6. Step 6: Final answer
    x = 558,978,679.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.