Home / 523,079,929.10-721,850,341.16-288,130,589.57

Finding the Fourth Proportional to 523,079,929.10, 721,850,341.16 and 288,130,589.57

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Solution

The fourth proportional to 523,079,929.10, 721,850,341.16 and 288,130,589.57 is: 397,620,235.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,079,929.10 : 721,850,341.16 = 288,130,589.57 : x
  2. Step 2: Convert to fraction form
    523,079,929.10/721,850,341.16 = 288,130,589.57/x
  3. Step 3: Cross multiply
    523,079,929.10x = 721,850,341.16 × 288,130,589.57
  4. Step 4: Simplify right side
    523,079,929.10x = 207,987,164,380,642,080
  5. Step 5: Solve for x
    x = 207,987,164,380,642,080/523,079,929.10
  6. Step 6: Final answer
    x = 397,620,235.09

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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.