Home / 790,779.80-1,091,276.70-428,206.52

Finding the Fourth Proportional to 790,779.80, 1,091,276.70 and 428,206.52

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Solution

The fourth proportional to 790,779.80, 1,091,276.70 and 428,206.52 is: 590,925.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,779.80 : 1,091,276.70 = 428,206.52 : x
  2. Step 2: Convert to fraction form
    790,779.80/1,091,276.70 = 428,206.52/x
  3. Step 3: Cross multiply
    790,779.80x = 1,091,276.70 × 428,206.52
  4. Step 4: Simplify right side
    790,779.80x = 467,291,798,064.08
  5. Step 5: Solve for x
    x = 467,291,798,064.08/790,779.80
  6. Step 6: Final answer
    x = 590,925.31

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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.