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Finding the Fourth Proportional to 551,275.83, 760,839.30 and 309,574.92

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Solution

The fourth proportional to 551,275.83, 760,839.30 and 309,574.92 is: 427,257.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,275.83 : 760,839.30 = 309,574.92 : x
  2. Step 2: Convert to fraction form
    551,275.83/760,839.30 = 309,574.92/x
  3. Step 3: Cross multiply
    551,275.83x = 760,839.30 × 309,574.92
  4. Step 4: Simplify right side
    551,275.83x = 235,536,765,430.36
  5. Step 5: Solve for x
    x = 235,536,765,430.36/551,275.83
  6. Step 6: Final answer
    x = 427,257.56

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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.