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Finding the Fourth Proportional to 556,619.63, 767,660.81 and 427,869.72

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Solution

The fourth proportional to 556,619.63, 767,660.81 and 427,869.72 is: 590,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,619.63 : 767,660.81 = 427,869.72 : x
  2. Step 2: Convert to fraction form
    556,619.63/767,660.81 = 427,869.72/x
  3. Step 3: Cross multiply
    556,619.63x = 767,660.81 × 427,869.72
  4. Step 4: Simplify right side
    556,619.63x = 328,458,813,690.33
  5. Step 5: Solve for x
    x = 328,458,813,690.33/556,619.63
  6. Step 6: Final answer
    x = 590,095.64

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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.