Home / 771,565.89-1,064,769.44-427,407.09

Finding the Fourth Proportional to 771,565.89, 1,064,769.44 and 427,407.09

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Solution

The fourth proportional to 771,565.89, 1,064,769.44 and 427,407.09 is: 589,826.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,565.89 : 1,064,769.44 = 427,407.09 : x
  2. Step 2: Convert to fraction form
    771,565.89/1,064,769.44 = 427,407.09/x
  3. Step 3: Cross multiply
    771,565.89x = 1,064,769.44 × 427,407.09
  4. Step 4: Simplify right side
    771,565.89x = 455,090,007,871.33
  5. Step 5: Solve for x
    x = 455,090,007,871.33/771,565.89
  6. Step 6: Final answer
    x = 589,826.50

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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.