Home / 874,330.80-1,312,079.40-400,772.40

Finding the Fourth Proportional to 874,330.80, 1,312,079.40 and 400,772.40

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Solution

The fourth proportional to 874,330.80, 1,312,079.40 and 400,772.40 is: 601,425.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,330.80 : 1,312,079.40 = 400,772.40 : x
  2. Step 2: Convert to fraction form
    874,330.80/1,312,079.40 = 400,772.40/x
  3. Step 3: Cross multiply
    874,330.80x = 1,312,079.40 × 400,772.40
  4. Step 4: Simplify right side
    874,330.80x = 525,845,210,128.56
  5. Step 5: Solve for x
    x = 525,845,210,128.56/874,330.80
  6. Step 6: Final answer
    x = 601,425.92

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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.