Home / 743,541.15-1,026,090.18-421,314.05

Finding the Fourth Proportional to 743,541.15, 1,026,090.18 and 421,314.05

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Solution

The fourth proportional to 743,541.15, 1,026,090.18 and 421,314.05 is: 581,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,541.15 : 1,026,090.18 = 421,314.05 : x
  2. Step 2: Convert to fraction form
    743,541.15/1,026,090.18 = 421,314.05/x
  3. Step 3: Cross multiply
    743,541.15x = 1,026,090.18 × 421,314.05
  4. Step 4: Simplify right side
    743,541.15x = 432,306,204,270.58
  5. Step 5: Solve for x
    x = 432,306,204,270.58/743,541.15
  6. Step 6: Final answer
    x = 581,415.30

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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.