Home / 1,398,319,323,324-1,929,660,129,827.20-781,031,049,868.32

Finding the Fourth Proportional to 1,398,319,323,324, 1,929,660,129,827.20 and 781,031,049,868.32

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Solution

The fourth proportional to 1,398,319,323,324, 1,929,660,129,827.20 and 781,031,049,868.32 is: 1,077,811,378,237.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,319,323,324 : 1,929,660,129,827.20 = 781,031,049,868.32 : x
  2. Step 2: Convert to fraction form
    1,398,319,323,324/1,929,660,129,827.20 = 781,031,049,868.32/x
  3. Step 3: Cross multiply
    1,398,319,323,324x = 1,929,660,129,827.20 × 781,031,049,868.32
  4. Step 4: Simplify right side
    1,398,319,323,324x = 1,507,124,477,087,976,463,007,744
  5. Step 5: Solve for x
    x = 1,507,124,477,087,976,463,007,744/1,398,319,323,324
  6. Step 6: Final answer
    x = 1,077,811,378,237.51

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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.