Home / 900,986.18-1,243,349.22-493,080.60

Finding the Fourth Proportional to 900,986.18, 1,243,349.22 and 493,080.60

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Solution

The fourth proportional to 900,986.18, 1,243,349.22 and 493,080.60 is: 680,444.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,986.18 : 1,243,349.22 = 493,080.60 : x
  2. Step 2: Convert to fraction form
    900,986.18/1,243,349.22 = 493,080.60/x
  3. Step 3: Cross multiply
    900,986.18x = 1,243,349.22 × 493,080.60
  4. Step 4: Simplify right side
    900,986.18x = 613,071,379,407.13
  5. Step 5: Solve for x
    x = 613,071,379,407.13/900,986.18
  6. Step 6: Final answer
    x = 680,444.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.