Home / 714,733,716.79-986,356,479.62-397,207,343.57

Finding the Fourth Proportional to 714,733,716.79, 986,356,479.62 and 397,207,343.57

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Solution

The fourth proportional to 714,733,716.79, 986,356,479.62 and 397,207,343.57 is: 548,159,444.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,733,716.79 : 986,356,479.62 = 397,207,343.57 : x
  2. Step 2: Convert to fraction form
    714,733,716.79/986,356,479.62 = 397,207,343.57/x
  3. Step 3: Cross multiply
    714,733,716.79x = 986,356,479.62 × 397,207,343.57
  4. Step 4: Simplify right side
    714,733,716.79x = 391,788,037,083,396,864
  5. Step 5: Solve for x
    x = 391,788,037,083,396,864/714,733,716.79
  6. Step 6: Final answer
    x = 548,159,444.39

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Double scale
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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.