Home / 921,606,816.12-1,271,941,827.03-519,803,042.58

Finding the Fourth Proportional to 921,606,816.12, 1,271,941,827.03 and 519,803,042.58

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Solution

The fourth proportional to 921,606,816.12, 1,271,941,827.03 and 519,803,042.58 is: 717,398,374.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,606,816.12 : 1,271,941,827.03 = 519,803,042.58 : x
  2. Step 2: Convert to fraction form
    921,606,816.12/1,271,941,827.03 = 519,803,042.58/x
  3. Step 3: Cross multiply
    921,606,816.12x = 1,271,941,827.03 × 519,803,042.58
  4. Step 4: Simplify right side
    921,606,816.12x = 661,159,231,674,958,080
  5. Step 5: Solve for x
    x = 661,159,231,674,958,080/921,606,816.12
  6. Step 6: Final answer
    x = 717,398,374.35

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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.