Home / 690,411,931.43-1,035,610,811.26-399,093,689.93

Finding the Fourth Proportional to 690,411,931.43, 1,035,610,811.26 and 399,093,689.93

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Solution

The fourth proportional to 690,411,931.43, 1,035,610,811.26 and 399,093,689.93 is: 598,636,438.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,411,931.43 : 1,035,610,811.26 = 399,093,689.93 : x
  2. Step 2: Convert to fraction form
    690,411,931.43/1,035,610,811.26 = 399,093,689.93/x
  3. Step 3: Cross multiply
    690,411,931.43x = 1,035,610,811.26 × 399,093,689.93
  4. Step 4: Simplify right side
    690,411,931.43x = 413,305,739,990,978,432
  5. Step 5: Solve for x
    x = 413,305,739,990,978,432/690,411,931.43
  6. Step 6: Final answer
    x = 598,636,438.88

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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.