Home / 1,210,807.12-1,670,925.36-666,945.24

Finding the Fourth Proportional to 1,210,807.12, 1,670,925.36 and 666,945.24

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Solution

The fourth proportional to 1,210,807.12, 1,670,925.36 and 666,945.24 is: 920,390.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,807.12 : 1,670,925.36 = 666,945.24 : x
  2. Step 2: Convert to fraction form
    1,210,807.12/1,670,925.36 = 666,945.24/x
  3. Step 3: Cross multiply
    1,210,807.12x = 1,670,925.36 × 666,945.24
  4. Step 4: Simplify right side
    1,210,807.12x = 1,114,415,715,247.29
  5. Step 5: Solve for x
    x = 1,114,415,715,247.29/1,210,807.12
  6. Step 6: Final answer
    x = 920,390.78

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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.