Home / 1,210,820.10-1,670,931.75-666,954.21

Finding the Fourth Proportional to 1,210,820.10, 1,670,931.75 and 666,954.21

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Solution

The fourth proportional to 1,210,820.10, 1,670,931.75 and 666,954.21 is: 920,396.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,820.10 : 1,670,931.75 = 666,954.21 : x
  2. Step 2: Convert to fraction form
    1,210,820.10/1,670,931.75 = 666,954.21/x
  3. Step 3: Cross multiply
    1,210,820.10x = 1,670,931.75 × 666,954.21
  4. Step 4: Simplify right side
    1,210,820.10x = 1,114,434,965,285.17
  5. Step 5: Solve for x
    x = 1,114,434,965,285.17/1,210,820.10
  6. Step 6: Final answer
    x = 920,396.82

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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.