Home / 989,408.76-1,365,381.63-536,699.76

Finding the Fourth Proportional to 989,408.76, 1,365,381.63 and 536,699.76

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Solution

The fourth proportional to 989,408.76, 1,365,381.63 and 536,699.76 is: 740,644.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,408.76 : 1,365,381.63 = 536,699.76 : x
  2. Step 2: Convert to fraction form
    989,408.76/1,365,381.63 = 536,699.76/x
  3. Step 3: Cross multiply
    989,408.76x = 1,365,381.63 × 536,699.76
  4. Step 4: Simplify right side
    989,408.76x = 732,799,993,129.41
  5. Step 5: Solve for x
    x = 732,799,993,129.41/989,408.76
  6. Step 6: Final answer
    x = 740,644.34

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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.