Home / 765,526.92-1,056,418.81-421,355.49

Finding the Fourth Proportional to 765,526.92, 1,056,418.81 and 421,355.49

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Solution

The fourth proportional to 765,526.92, 1,056,418.81 and 421,355.49 is: 581,465.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,526.92 : 1,056,418.81 = 421,355.49 : x
  2. Step 2: Convert to fraction form
    765,526.92/1,056,418.81 = 421,355.49/x
  3. Step 3: Cross multiply
    765,526.92x = 1,056,418.81 × 421,355.49
  4. Step 4: Simplify right side
    765,526.92x = 445,127,860,317.81
  5. Step 5: Solve for x
    x = 445,127,860,317.81/765,526.92
  6. Step 6: Final answer
    x = 581,465.98

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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.