Home / 983,955.60-1,357,368.84-661,679.28

Finding the Fourth Proportional to 983,955.60, 1,357,368.84 and 661,679.28

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Solution

The fourth proportional to 983,955.60, 1,357,368.84 and 661,679.28 is: 912,787.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,955.60 : 1,357,368.84 = 661,679.28 : x
  2. Step 2: Convert to fraction form
    983,955.60/1,357,368.84 = 661,679.28/x
  3. Step 3: Cross multiply
    983,955.60x = 1,357,368.84 × 661,679.28
  4. Step 4: Simplify right side
    983,955.60x = 898,142,836,745.64
  5. Step 5: Solve for x
    x = 898,142,836,745.64/983,955.60
  6. Step 6: Final answer
    x = 912,787.97

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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.