Home / 743,581.82-1,026,140.40-421,353.34

Finding the Fourth Proportional to 743,581.82, 1,026,140.40 and 421,353.34

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Solution

The fourth proportional to 743,581.82, 1,026,140.40 and 421,353.34 is: 581,466.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,581.82 : 1,026,140.40 = 421,353.34 : x
  2. Step 2: Convert to fraction form
    743,581.82/1,026,140.40 = 421,353.34/x
  3. Step 3: Cross multiply
    743,581.82x = 1,026,140.40 × 421,353.34
  4. Step 4: Simplify right side
    743,581.82x = 432,367,688,055.63
  5. Step 5: Solve for x
    x = 432,367,688,055.63/743,581.82
  6. Step 6: Final answer
    x = 581,466.19

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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.