Home / 743,587.98-1,026,148.90-421,359.50

Finding the Fourth Proportional to 743,587.98, 1,026,148.90 and 421,359.50

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Solution

The fourth proportional to 743,587.98, 1,026,148.90 and 421,359.50 is: 581,474.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,587.98 : 1,026,148.90 = 421,359.50 : x
  2. Step 2: Convert to fraction form
    743,587.98/1,026,148.90 = 421,359.50/x
  3. Step 3: Cross multiply
    743,587.98x = 1,026,148.90 × 421,359.50
  4. Step 4: Simplify right side
    743,587.98x = 432,377,587,429.55
  5. Step 5: Solve for x
    x = 432,377,587,429.55/743,587.98
  6. Step 6: Final answer
    x = 581,474.69

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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.