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Finding the Fourth Proportional to 611,995.20, 917,992.80 and 570,523.20

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Solution

The fourth proportional to 611,995.20, 917,992.80 and 570,523.20 is: 855,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,995.20 : 917,992.80 = 570,523.20 : x
  2. Step 2: Convert to fraction form
    611,995.20/917,992.80 = 570,523.20/x
  3. Step 3: Cross multiply
    611,995.20x = 917,992.80 × 570,523.20
  4. Step 4: Simplify right side
    611,995.20x = 523,736,189,832.96
  5. Step 5: Solve for x
    x = 523,736,189,832.96/611,995.20
  6. Step 6: Final answer
    x = 855,784.80

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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.