Home / 1,209,878.10-1,669,602.29-666,009.02

Finding the Fourth Proportional to 1,209,878.10, 1,669,602.29 and 666,009.02

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Solution

The fourth proportional to 1,209,878.10, 1,669,602.29 and 666,009.02 is: 919,076.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,878.10 : 1,669,602.29 = 666,009.02 : x
  2. Step 2: Convert to fraction form
    1,209,878.10/1,669,602.29 = 666,009.02/x
  3. Step 3: Cross multiply
    1,209,878.10x = 1,669,602.29 × 666,009.02
  4. Step 4: Simplify right side
    1,209,878.10x = 1,111,970,184,952.66
  5. Step 5: Solve for x
    x = 1,111,970,184,952.66/1,209,878.10
  6. Step 6: Final answer
    x = 919,076.22

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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.