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Finding the Fourth Proportional to 556,148.80, 767,491.39 and 326,715.76

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Solution

The fourth proportional to 556,148.80, 767,491.39 and 326,715.76 is: 450,871.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,148.80 : 767,491.39 = 326,715.76 : x
  2. Step 2: Convert to fraction form
    556,148.80/767,491.39 = 326,715.76/x
  3. Step 3: Cross multiply
    556,148.80x = 767,491.39 × 326,715.76
  4. Step 4: Simplify right side
    556,148.80x = 250,751,531,675.37
  5. Step 5: Solve for x
    x = 250,751,531,675.37/556,148.80
  6. Step 6: Final answer
    x = 450,871.30

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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.