Home / 680,227,742.63-938,711,982.83-382,869,812.54

Finding the Fourth Proportional to 680,227,742.63, 938,711,982.83 and 382,869,812.54

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Solution

The fourth proportional to 680,227,742.63, 938,711,982.83 and 382,869,812.54 is: 528,359,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,227,742.63 : 938,711,982.83 = 382,869,812.54 : x
  2. Step 2: Convert to fraction form
    680,227,742.63/938,711,982.83 = 382,869,812.54/x
  3. Step 3: Cross multiply
    680,227,742.63x = 938,711,982.83 × 382,869,812.54
  4. Step 4: Simplify right side
    680,227,742.63x = 359,404,480,895,606,272
  5. Step 5: Solve for x
    x = 359,404,480,895,606,272/680,227,742.63
  6. Step 6: Final answer
    x = 528,359,045.61

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1.5x scale

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.