Home / 743,432.75-1,025,987.93-421,145.49

Finding the Fourth Proportional to 743,432.75, 1,025,987.93 and 421,145.49

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Solution

The fourth proportional to 743,432.75, 1,025,987.93 and 421,145.49 is: 581,209.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,432.75 : 1,025,987.93 = 421,145.49 : x
  2. Step 2: Convert to fraction form
    743,432.75/1,025,987.93 = 421,145.49/x
  3. Step 3: Cross multiply
    743,432.75x = 1,025,987.93 × 421,145.49
  4. Step 4: Simplify right side
    743,432.75x = 432,090,189,513.94
  5. Step 5: Solve for x
    x = 432,090,189,513.94/743,432.75
  6. Step 6: Final answer
    x = 581,209.52

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Double scale
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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.