Home / 766,868.40-1,150,302.60-430,945.20

Finding the Fourth Proportional to 766,868.40, 1,150,302.60 and 430,945.20

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Solution

The fourth proportional to 766,868.40, 1,150,302.60 and 430,945.20 is: 646,417.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,868.40 : 1,150,302.60 = 430,945.20 : x
  2. Step 2: Convert to fraction form
    766,868.40/1,150,302.60 = 430,945.20/x
  3. Step 3: Cross multiply
    766,868.40x = 1,150,302.60 × 430,945.20
  4. Step 4: Simplify right side
    766,868.40x = 495,717,384,017.52
  5. Step 5: Solve for x
    x = 495,717,384,017.52/766,868.40
  6. Step 6: Final answer
    x = 646,417.80

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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.