Home / 487,246.20-730,869.30-319,284.60

Finding the Fourth Proportional to 487,246.20, 730,869.30 and 319,284.60

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Solution

The fourth proportional to 487,246.20, 730,869.30 and 319,284.60 is: 478,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,246.20 : 730,869.30 = 319,284.60 : x
  2. Step 2: Convert to fraction form
    487,246.20/730,869.30 = 319,284.60/x
  3. Step 3: Cross multiply
    487,246.20x = 730,869.30 × 319,284.60
  4. Step 4: Simplify right side
    487,246.20x = 233,355,312,102.78
  5. Step 5: Solve for x
    x = 233,355,312,102.78/487,246.20
  6. Step 6: Final answer
    x = 478,926.90

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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.