Home / 1,159,928.80-1,737,128.40-712,031.20

Finding the Fourth Proportional to 1,159,928.80, 1,737,128.40 and 712,031.20

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Solution

The fourth proportional to 1,159,928.80, 1,737,128.40 and 712,031.20 is: 1,066,349.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,928.80 : 1,737,128.40 = 712,031.20 : x
  2. Step 2: Convert to fraction form
    1,159,928.80/1,737,128.40 = 712,031.20/x
  3. Step 3: Cross multiply
    1,159,928.80x = 1,737,128.40 × 712,031.20
  4. Step 4: Simplify right side
    1,159,928.80x = 1,236,889,619,206.08
  5. Step 5: Solve for x
    x = 1,236,889,619,206.08/1,159,928.80
  6. Step 6: Final answer
    x = 1,066,349.61

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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.