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Finding the Fourth Proportional to 557,635.32, 769,543.74 and 302,990.76

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Solution

The fourth proportional to 557,635.32, 769,543.74 and 302,990.76 is: 418,131.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,635.32 : 769,543.74 = 302,990.76 : x
  2. Step 2: Convert to fraction form
    557,635.32/769,543.74 = 302,990.76/x
  3. Step 3: Cross multiply
    557,635.32x = 769,543.74 × 302,990.76
  4. Step 4: Simplify right side
    557,635.32x = 233,164,642,635.84
  5. Step 5: Solve for x
    x = 233,164,642,635.84/557,635.32
  6. Step 6: Final answer
    x = 418,131.05

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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.