Home / 771,555.52-1,064,709.57-427,368.21

Finding the Fourth Proportional to 771,555.52, 1,064,709.57 and 427,368.21

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Solution

The fourth proportional to 771,555.52, 1,064,709.57 and 427,368.21 is: 589,747.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,555.52 : 1,064,709.57 = 427,368.21 : x
  2. Step 2: Convert to fraction form
    771,555.52/1,064,709.57 = 427,368.21/x
  3. Step 3: Cross multiply
    771,555.52x = 1,064,709.57 × 427,368.21
  4. Step 4: Simplify right side
    771,555.52x = 455,023,023,100.77
  5. Step 5: Solve for x
    x = 455,023,023,100.77/771,555.52
  6. Step 6: Final answer
    x = 589,747.61

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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.