Home / 3,121,130-4,307,159.40-1,690,346

Finding the Fourth Proportional to 3,121,130, 4,307,159.40 and 1,690,346

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Solution

The fourth proportional to 3,121,130, 4,307,159.40 and 1,690,346 is: 2,332,677.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,130 : 4,307,159.40 = 1,690,346 : x
  2. Step 2: Convert to fraction form
    3,121,130/4,307,159.40 = 1,690,346/x
  3. Step 3: Cross multiply
    3,121,130x = 4,307,159.40 × 1,690,346
  4. Step 4: Simplify right side
    3,121,130x = 7,280,589,663,152.40
  5. Step 5: Solve for x
    x = 7,280,589,663,152.40/3,121,130
  6. Step 6: Final answer
    x = 2,332,677.48

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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.