Home / 743,478.61-1,025,967.04-421,182.13

Finding the Fourth Proportional to 743,478.61, 1,025,967.04 and 421,182.13

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Solution

The fourth proportional to 743,478.61, 1,025,967.04 and 421,182.13 is: 581,212.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,478.61 : 1,025,967.04 = 421,182.13 : x
  2. Step 2: Convert to fraction form
    743,478.61/1,025,967.04 = 421,182.13/x
  3. Step 3: Cross multiply
    743,478.61x = 1,025,967.04 × 421,182.13
  4. Step 4: Simplify right side
    743,478.61x = 432,118,983,217.00
  5. Step 5: Solve for x
    x = 432,118,983,217.00/743,478.61
  6. Step 6: Final answer
    x = 581,212.39

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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.