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Finding the Fourth Proportional to 615,416.80, 921,513.60 and 494,832.80

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Solution

The fourth proportional to 615,416.80, 921,513.60 and 494,832.80 is: 740,953.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,416.80 : 921,513.60 = 494,832.80 : x
  2. Step 2: Convert to fraction form
    615,416.80/921,513.60 = 494,832.80/x
  3. Step 3: Cross multiply
    615,416.80x = 921,513.60 × 494,832.80
  4. Step 4: Simplify right side
    615,416.80x = 455,995,154,926.08
  5. Step 5: Solve for x
    x = 455,995,154,926.08/615,416.80
  6. Step 6: Final answer
    x = 740,953.37

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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.