Home / 743,685.76-1,026,159.60-421,329.28

Finding the Fourth Proportional to 743,685.76, 1,026,159.60 and 421,329.28

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Solution

The fourth proportional to 743,685.76, 1,026,159.60 and 421,329.28 is: 581,362.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,685.76 : 1,026,159.60 = 421,329.28 : x
  2. Step 2: Convert to fraction form
    743,685.76/1,026,159.60 = 421,329.28/x
  3. Step 3: Cross multiply
    743,685.76x = 1,026,159.60 × 421,329.28
  4. Step 4: Simplify right side
    743,685.76x = 432,351,085,433.09
  5. Step 5: Solve for x
    x = 432,351,085,433.09/743,685.76
  6. Step 6: Final answer
    x = 581,362.60

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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.