Home / 500,908,575.18-690,966,639.03-312,409,611.64

Finding the Fourth Proportional to 500,908,575.18, 690,966,639.03 and 312,409,611.64

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Solution

The fourth proportional to 500,908,575.18, 690,966,639.03 and 312,409,611.64 is: 430,946,144.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,908,575.18 : 690,966,639.03 = 312,409,611.64 : x
  2. Step 2: Convert to fraction form
    500,908,575.18/690,966,639.03 = 312,409,611.64/x
  3. Step 3: Cross multiply
    500,908,575.18x = 690,966,639.03 × 312,409,611.64
  4. Step 4: Simplify right side
    500,908,575.18x = 215,864,619,353,710,400
  5. Step 5: Solve for x
    x = 215,864,619,353,710,400/500,908,575.18
  6. Step 6: Final answer
    x = 430,946,144.76

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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.