Home / 1,272,108,175.86-1,908,186,176.58-398,690,206.77

Finding the Fourth Proportional to 1,272,108,175.86, 1,908,186,176.58 and 398,690,206.77

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Solution

The fourth proportional to 1,272,108,175.86, 1,908,186,176.58 and 398,690,206.77 is: 598,042,804.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,108,175.86 : 1,908,186,176.58 = 398,690,206.77 : x
  2. Step 2: Convert to fraction form
    1,272,108,175.86/1,908,186,176.58 = 398,690,206.77/x
  3. Step 3: Cross multiply
    1,272,108,175.86x = 1,908,186,176.58 × 398,690,206.77
  4. Step 4: Simplify right side
    1,272,108,175.86x = 760,775,141,293,506,048
  5. Step 5: Solve for x
    x = 760,775,141,293,506,048/1,272,108,175.86
  6. Step 6: Final answer
    x = 598,042,804.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.