Home / 719,263,866.39-992,580,486.39-389,239,005.39

Finding the Fourth Proportional to 719,263,866.39, 992,580,486.39 and 389,239,005.39

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Solution

The fourth proportional to 719,263,866.39, 992,580,486.39 and 389,239,005.39 is: 537,147,852.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,263,866.39 : 992,580,486.39 = 389,239,005.39 : x
  2. Step 2: Convert to fraction form
    719,263,866.39/992,580,486.39 = 389,239,005.39/x
  3. Step 3: Cross multiply
    719,263,866.39x = 992,580,486.39 × 389,239,005.39
  4. Step 4: Simplify right side
    719,263,866.39x = 386,351,041,291,966,016
  5. Step 5: Solve for x
    x = 386,351,041,291,966,016/719,263,866.39
  6. Step 6: Final answer
    x = 537,147,852.61

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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.