Home / 743,576.40-1,026,136.49-421,308.32

Finding the Fourth Proportional to 743,576.40, 1,026,136.49 and 421,308.32

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Solution

The fourth proportional to 743,576.40, 1,026,136.49 and 421,308.32 is: 581,406.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,576.40 : 1,026,136.49 = 421,308.32 : x
  2. Step 2: Convert to fraction form
    743,576.40/1,026,136.49 = 421,308.32/x
  3. Step 3: Cross multiply
    743,576.40x = 1,026,136.49 × 421,308.32
  4. Step 4: Simplify right side
    743,576.40x = 432,319,833,455.37
  5. Step 5: Solve for x
    x = 432,319,833,455.37/743,576.40
  6. Step 6: Final answer
    x = 581,406.07

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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.