Home / 991,514.19-1,487,306.53-317,507.91

Finding the Fourth Proportional to 991,514.19, 1,487,306.53 and 317,507.91

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Solution

The fourth proportional to 991,514.19, 1,487,306.53 and 317,507.91 is: 476,273.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,514.19 : 1,487,306.53 = 317,507.91 : x
  2. Step 2: Convert to fraction form
    991,514.19/1,487,306.53 = 317,507.91/x
  3. Step 3: Cross multiply
    991,514.19x = 1,487,306.53 × 317,507.91
  4. Step 4: Simplify right side
    991,514.19x = 472,231,587,075.88
  5. Step 5: Solve for x
    x = 472,231,587,075.88/991,514.19
  6. Step 6: Final answer
    x = 476,273.15

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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.