Home / 743,663.61-1,026,172.33-421,304.67

Finding the Fourth Proportional to 743,663.61, 1,026,172.33 and 421,304.67

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Solution

The fourth proportional to 743,663.61, 1,026,172.33 and 421,304.67 is: 581,353.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,663.61 : 1,026,172.33 = 421,304.67 : x
  2. Step 2: Convert to fraction form
    743,663.61/1,026,172.33 = 421,304.67/x
  3. Step 3: Cross multiply
    743,663.61x = 1,026,172.33 × 421,304.67
  4. Step 4: Simplify right side
    743,663.61x = 432,331,193,800.52
  5. Step 5: Solve for x
    x = 432,331,193,800.52/743,663.61
  6. Step 6: Final answer
    x = 581,353.17

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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.