Home / 771,809.52-1,158,774.71-392,984.78

Finding the Fourth Proportional to 771,809.52, 1,158,774.71 and 392,984.78

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Solution

The fourth proportional to 771,809.52, 1,158,774.71 and 392,984.78 is: 590,017.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,809.52 : 1,158,774.71 = 392,984.78 : x
  2. Step 2: Convert to fraction form
    771,809.52/1,158,774.71 = 392,984.78/x
  3. Step 3: Cross multiply
    771,809.52x = 1,158,774.71 × 392,984.78
  4. Step 4: Simplify right side
    771,809.52x = 455,380,816,720.12
  5. Step 5: Solve for x
    x = 455,380,816,720.12/771,809.52
  6. Step 6: Final answer
    x = 590,017.10

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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.