Home / 729,685,455.12-1,006,966,470.96-395,160,574.32

Finding the Fourth Proportional to 729,685,455.12, 1,006,966,470.96 and 395,160,574.32

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Solution

The fourth proportional to 729,685,455.12, 1,006,966,470.96 and 395,160,574.32 is: 545,321,886.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,685,455.12 : 1,006,966,470.96 = 395,160,574.32 : x
  2. Step 2: Convert to fraction form
    729,685,455.12/1,006,966,470.96 = 395,160,574.32/x
  3. Step 3: Cross multiply
    729,685,455.12x = 1,006,966,470.96 × 395,160,574.32
  4. Step 4: Simplify right side
    729,685,455.12x = 397,913,448,985,537,216
  5. Step 5: Solve for x
    x = 397,913,448,985,537,216/729,685,455.12
  6. Step 6: Final answer
    x = 545,321,886.57

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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.