Home / 430,720.48-646,224.59-190,801.79

Finding the Fourth Proportional to 430,720.48, 646,224.59 and 190,801.79

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Solution

The fourth proportional to 430,720.48, 646,224.59 and 190,801.79 is: 286,266.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,720.48 : 646,224.59 = 190,801.79 : x
  2. Step 2: Convert to fraction form
    430,720.48/646,224.59 = 190,801.79/x
  3. Step 3: Cross multiply
    430,720.48x = 646,224.59 × 190,801.79
  4. Step 4: Simplify right side
    430,720.48x = 123,300,808,514.02
  5. Step 5: Solve for x
    x = 123,300,808,514.02/430,720.48
  6. Step 6: Final answer
    x = 286,266.42

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1.5x scale

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.