Home / 740,275.80-1,021,640.94-418,064.28

Finding the Fourth Proportional to 740,275.80, 1,021,640.94 and 418,064.28

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Solution

The fourth proportional to 740,275.80, 1,021,640.94 and 418,064.28 is: 576,962.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,275.80 : 1,021,640.94 = 418,064.28 : x
  2. Step 2: Convert to fraction form
    740,275.80/1,021,640.94 = 418,064.28/x
  3. Step 3: Cross multiply
    740,275.80x = 1,021,640.94 × 418,064.28
  4. Step 4: Simplify right side
    740,275.80x = 427,111,583,999.62
  5. Step 5: Solve for x
    x = 427,111,583,999.62/740,275.80
  6. Step 6: Final answer
    x = 576,962.78

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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.