Home / 461,721.20-692,801.10-319,784.90

Finding the Fourth Proportional to 461,721.20, 692,801.10 and 319,784.90

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Solution

The fourth proportional to 461,721.20, 692,801.10 and 319,784.90 is: 479,829.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,721.20 : 692,801.10 = 319,784.90 : x
  2. Step 2: Convert to fraction form
    461,721.20/692,801.10 = 319,784.90/x
  3. Step 3: Cross multiply
    461,721.20x = 692,801.10 × 319,784.90
  4. Step 4: Simplify right side
    461,721.20x = 221,547,327,019.39
  5. Step 5: Solve for x
    x = 221,547,327,019.39/461,721.20
  6. Step 6: Final answer
    x = 479,829.23

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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.