Home / 3,121,472-4,307,631.36-1,690,688

Finding the Fourth Proportional to 3,121,472, 4,307,631.36 and 1,690,688

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Solution

The fourth proportional to 3,121,472, 4,307,631.36 and 1,690,688 is: 2,333,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,472 : 4,307,631.36 = 1,690,688 : x
  2. Step 2: Convert to fraction form
    3,121,472/4,307,631.36 = 1,690,688/x
  3. Step 3: Cross multiply
    3,121,472x = 4,307,631.36 × 1,690,688
  4. Step 4: Simplify right side
    3,121,472x = 7,282,860,648,775.68
  5. Step 5: Solve for x
    x = 7,282,860,648,775.68/3,121,472
  6. Step 6: Final answer
    x = 2,333,149.44

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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.