Home / 1,210,764.96-1,670,931.52-666,900.59

Finding the Fourth Proportional to 1,210,764.96, 1,670,931.52 and 666,900.59

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Solution

The fourth proportional to 1,210,764.96, 1,670,931.52 and 666,900.59 is: 920,364.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,764.96 : 1,670,931.52 = 666,900.59 : x
  2. Step 2: Convert to fraction form
    1,210,764.96/1,670,931.52 = 666,900.59/x
  3. Step 3: Cross multiply
    1,210,764.96x = 1,670,931.52 × 666,900.59
  4. Step 4: Simplify right side
    1,210,764.96x = 1,114,345,206,515.69
  5. Step 5: Solve for x
    x = 1,114,345,206,515.69/1,210,764.96
  6. Step 6: Final answer
    x = 920,364.60

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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.