Home / 1,210,813.38-1,670,860.71-666,937.46

Finding the Fourth Proportional to 1,210,813.38, 1,670,860.71 and 666,937.46

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Solution

The fourth proportional to 1,210,813.38, 1,670,860.71 and 666,937.46 is: 920,339.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,813.38 : 1,670,860.71 = 666,937.46 : x
  2. Step 2: Convert to fraction form
    1,210,813.38/1,670,860.71 = 666,937.46/x
  3. Step 3: Cross multiply
    1,210,813.38x = 1,670,860.71 × 666,937.46
  4. Step 4: Simplify right side
    1,210,813.38x = 1,114,359,597,941.20
  5. Step 5: Solve for x
    x = 1,114,359,597,941.20/1,210,813.38
  6. Step 6: Final answer
    x = 920,339.68

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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.