Home / 811,602.81-1,217,051.55-385,260.81

Finding the Fourth Proportional to 811,602.81, 1,217,051.55 and 385,260.81

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Solution

The fourth proportional to 811,602.81, 1,217,051.55 and 385,260.81 is: 577,723.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,602.81 : 1,217,051.55 = 385,260.81 : x
  2. Step 2: Convert to fraction form
    811,602.81/1,217,051.55 = 385,260.81/x
  3. Step 3: Cross multiply
    811,602.81x = 1,217,051.55 × 385,260.81
  4. Step 4: Simplify right side
    811,602.81x = 468,882,265,964.76
  5. Step 5: Solve for x
    x = 468,882,265,964.76/811,602.81
  6. Step 6: Final answer
    x = 577,723.81

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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.