Home / 813,657.52-1,220,486.34-315,021.52

Finding the Fourth Proportional to 813,657.52, 1,220,486.34 and 315,021.52

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Solution

The fourth proportional to 813,657.52, 1,220,486.34 and 315,021.52 is: 472,532.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,657.52 : 1,220,486.34 = 315,021.52 : x
  2. Step 2: Convert to fraction form
    813,657.52/1,220,486.34 = 315,021.52/x
  3. Step 3: Cross multiply
    813,657.52x = 1,220,486.34 × 315,021.52
  4. Step 4: Simplify right side
    813,657.52x = 384,479,461,966.04
  5. Step 5: Solve for x
    x = 384,479,461,966.04/813,657.52
  6. Step 6: Final answer
    x = 472,532.30

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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.