Home / 385,806,438.40-532,400,602.80-220,790,464.96

Finding the Fourth Proportional to 385,806,438.40, 532,400,602.80 and 220,790,464.96

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Solution

The fourth proportional to 385,806,438.40, 532,400,602.80 and 220,790,464.96 is: 304,683,812.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,806,438.40 : 532,400,602.80 = 220,790,464.96 : x
  2. Step 2: Convert to fraction form
    385,806,438.40/532,400,602.80 = 220,790,464.96/x
  3. Step 3: Cross multiply
    385,806,438.40x = 532,400,602.80 × 220,790,464.96
  4. Step 4: Simplify right side
    385,806,438.40x = 117,548,976,637,196,288
  5. Step 5: Solve for x
    x = 117,548,976,637,196,288/385,806,438.40
  6. Step 6: Final answer
    x = 304,683,812.76

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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.