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Finding the Fourth Proportional to 556,426.80, 767,869.88 and 301,778.19

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Solution

The fourth proportional to 556,426.80, 767,869.88 and 301,778.19 is: 416,454.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,426.80 : 767,869.88 = 301,778.19 : x
  2. Step 2: Convert to fraction form
    556,426.80/767,869.88 = 301,778.19/x
  3. Step 3: Cross multiply
    556,426.80x = 767,869.88 × 301,778.19
  4. Step 4: Simplify right side
    556,426.80x = 231,726,381,033.03
  5. Step 5: Solve for x
    x = 231,726,381,033.03/556,426.80
  6. Step 6: Final answer
    x = 416,454.39

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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.