Home / 1,210,865.52-1,670,986.64-666,988.70

Finding the Fourth Proportional to 1,210,865.52, 1,670,986.64 and 666,988.70

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Solution

The fourth proportional to 1,210,865.52, 1,670,986.64 and 666,988.70 is: 920,440.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,865.52 : 1,670,986.64 = 666,988.70 : x
  2. Step 2: Convert to fraction form
    1,210,865.52/1,670,986.64 = 666,988.70/x
  3. Step 3: Cross multiply
    1,210,865.52x = 1,670,986.64 × 666,988.70
  4. Step 4: Simplify right side
    1,210,865.52x = 1,114,529,212,575.91
  5. Step 5: Solve for x
    x = 1,114,529,212,575.91/1,210,865.52
  6. Step 6: Final answer
    x = 920,440.13

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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.