Home / 1,139,731.60-1,572,335.40-686,765.20

Finding the Fourth Proportional to 1,139,731.60, 1,572,335.40 and 686,765.20

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Solution

The fourth proportional to 1,139,731.60, 1,572,335.40 and 686,765.20 is: 947,438.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,731.60 : 1,572,335.40 = 686,765.20 : x
  2. Step 2: Convert to fraction form
    1,139,731.60/1,572,335.40 = 686,765.20/x
  3. Step 3: Cross multiply
    1,139,731.60x = 1,572,335.40 × 686,765.20
  4. Step 4: Simplify right side
    1,139,731.60x = 1,079,825,235,448.08
  5. Step 5: Solve for x
    x = 1,079,825,235,448.08/1,139,731.60
  6. Step 6: Final answer
    x = 947,438.18

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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.