Home / 719,836,983.36-993,375,995.04-389,812,691.52

Finding the Fourth Proportional to 719,836,983.36, 993,375,995.04 and 389,812,691.52

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Solution

The fourth proportional to 719,836,983.36, 993,375,995.04 and 389,812,691.52 is: 537,942,033.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,836,983.36 : 993,375,995.04 = 389,812,691.52 : x
  2. Step 2: Convert to fraction form
    719,836,983.36/993,375,995.04 = 389,812,691.52/x
  3. Step 3: Cross multiply
    719,836,983.36x = 993,375,995.04 × 389,812,691.52
  4. Step 4: Simplify right side
    719,836,983.36x = 387,230,570,317,900,544
  5. Step 5: Solve for x
    x = 387,230,570,317,900,544/719,836,983.36
  6. Step 6: Final answer
    x = 537,942,033.08

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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.