Home / 1,020,869-1,531,186.78-272,973.32

Finding the Fourth Proportional to 1,020,869, 1,531,186.78 and 272,973.32

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Solution

The fourth proportional to 1,020,869, 1,531,186.78 and 272,973.32 is: 409,428.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,869 : 1,531,186.78 = 272,973.32 : x
  2. Step 2: Convert to fraction form
    1,020,869/1,531,186.78 = 272,973.32/x
  3. Step 3: Cross multiply
    1,020,869x = 1,531,186.78 × 272,973.32
  4. Step 4: Simplify right side
    1,020,869x = 417,973,138,876.71
  5. Step 5: Solve for x
    x = 417,973,138,876.71/1,020,869
  6. Step 6: Final answer
    x = 409,428.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.