Home / 579,315,998.40-869,981,767.20-307,218,206.40

Finding the Fourth Proportional to 579,315,998.40, 869,981,767.20 and 307,218,206.40

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Solution

The fourth proportional to 579,315,998.40, 869,981,767.20 and 307,218,206.40 is: 461,361,741.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,315,998.40 : 869,981,767.20 = 307,218,206.40 : x
  2. Step 2: Convert to fraction form
    579,315,998.40/869,981,767.20 = 307,218,206.40/x
  3. Step 3: Cross multiply
    579,315,998.40x = 869,981,767.20 × 307,218,206.40
  4. Step 4: Simplify right side
    579,315,998.40x = 267,274,238,119,886,336
  5. Step 5: Solve for x
    x = 267,274,238,119,886,336/579,315,998.40
  6. Step 6: Final answer
    x = 461,361,741.88

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1.5x scale

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.