Home / 743,480.61-1,025,969.81-421,184.13

Finding the Fourth Proportional to 743,480.61, 1,025,969.81 and 421,184.13

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Solution

The fourth proportional to 743,480.61, 1,025,969.81 and 421,184.13 is: 581,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,480.61 : 1,025,969.81 = 421,184.13 : x
  2. Step 2: Convert to fraction form
    743,480.61/1,025,969.81 = 421,184.13/x
  3. Step 3: Cross multiply
    743,480.61x = 1,025,969.81 × 421,184.13
  4. Step 4: Simplify right side
    743,480.61x = 432,122,199,725.20
  5. Step 5: Solve for x
    x = 432,122,199,725.20/743,480.61
  6. Step 6: Final answer
    x = 581,215.16

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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.