Home / 743,533.80-1,026,079.20-421,303.56

Finding the Fourth Proportional to 743,533.80, 1,026,079.20 and 421,303.56

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Solution

The fourth proportional to 743,533.80, 1,026,079.20 and 421,303.56 is: 581,400.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,533.80 : 1,026,079.20 = 421,303.56 : x
  2. Step 2: Convert to fraction form
    743,533.80/1,026,079.20 = 421,303.56/x
  3. Step 3: Cross multiply
    743,533.80x = 1,026,079.20 × 421,303.56
  4. Step 4: Simplify right side
    743,533.80x = 432,290,819,801.95
  5. Step 5: Solve for x
    x = 432,290,819,801.95/743,533.80
  6. Step 6: Final answer
    x = 581,400.36

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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.