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Finding the Fourth Proportional to 706,492,655.67, 974,942,045.38 and 388,949,731.46

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Solution

The fourth proportional to 706,492,655.67, 974,942,045.38 and 388,949,731.46 is: 536,740,819.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,492,655.67 : 974,942,045.38 = 388,949,731.46 : x
  2. Step 2: Convert to fraction form
    706,492,655.67/974,942,045.38 = 388,949,731.46/x
  3. Step 3: Cross multiply
    706,492,655.67x = 974,942,045.38 × 388,949,731.46
  4. Step 4: Simplify right side
    706,492,655.67x = 379,203,446,739,614,080
  5. Step 5: Solve for x
    x = 379,203,446,739,614,080/706,492,655.67
  6. Step 6: Final answer
    x = 536,740,819.17

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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.