Home / 810,123.90-1,214,602.65-455,246.70

Finding the Fourth Proportional to 810,123.90, 1,214,602.65 and 455,246.70

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Solution

The fourth proportional to 810,123.90, 1,214,602.65 and 455,246.70 is: 682,542.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,123.90 : 1,214,602.65 = 455,246.70 : x
  2. Step 2: Convert to fraction form
    810,123.90/1,214,602.65 = 455,246.70/x
  3. Step 3: Cross multiply
    810,123.90x = 1,214,602.65 × 455,246.70
  4. Step 4: Simplify right side
    810,123.90x = 552,943,848,223.76
  5. Step 5: Solve for x
    x = 552,943,848,223.76/810,123.90
  6. Step 6: Final answer
    x = 682,542.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.