Home / 939,351,204.17-1,296,269,148.12-521,690,393.66

Finding the Fourth Proportional to 939,351,204.17, 1,296,269,148.12 and 521,690,393.66

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Solution

The fourth proportional to 939,351,204.17, 1,296,269,148.12 and 521,690,393.66 is: 719,913,019.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,351,204.17 : 1,296,269,148.12 = 521,690,393.66 : x
  2. Step 2: Convert to fraction form
    939,351,204.17/1,296,269,148.12 = 521,690,393.66/x
  3. Step 3: Cross multiply
    939,351,204.17x = 1,296,269,148.12 × 521,690,393.66
  4. Step 4: Simplify right side
    939,351,204.17x = 676,251,162,165,554,176
  5. Step 5: Solve for x
    x = 676,251,162,165,554,176/939,351,204.17
  6. Step 6: Final answer
    x = 719,913,019.93

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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.