Home / 1,319,407.80-1,979,111.70-655,855.80

Finding the Fourth Proportional to 1,319,407.80, 1,979,111.70 and 655,855.80

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Solution

The fourth proportional to 1,319,407.80, 1,979,111.70 and 655,855.80 is: 983,783.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,407.80 : 1,979,111.70 = 655,855.80 : x
  2. Step 2: Convert to fraction form
    1,319,407.80/1,979,111.70 = 655,855.80/x
  3. Step 3: Cross multiply
    1,319,407.80x = 1,979,111.70 × 655,855.80
  4. Step 4: Simplify right side
    1,319,407.80x = 1,298,011,887,292.86
  5. Step 5: Solve for x
    x = 1,298,011,887,292.86/1,319,407.80
  6. Step 6: Final answer
    x = 983,783.70

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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.