Home / 1,210,315.40-1,670,169.14-666,347.91

Finding the Fourth Proportional to 1,210,315.40, 1,670,169.14 and 666,347.91

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Solution

The fourth proportional to 1,210,315.40, 1,670,169.14 and 666,347.91 is: 919,523.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,315.40 : 1,670,169.14 = 666,347.91 : x
  2. Step 2: Convert to fraction form
    1,210,315.40/1,670,169.14 = 666,347.91/x
  3. Step 3: Cross multiply
    1,210,315.40x = 1,670,169.14 × 666,347.91
  4. Step 4: Simplify right side
    1,210,315.40x = 1,112,913,715,785.50
  5. Step 5: Solve for x
    x = 1,112,913,715,785.50/1,210,315.40
  6. Step 6: Final answer
    x = 919,523.72

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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.