Home / 765,526.37-1,056,418.02-421,354.94

Finding the Fourth Proportional to 765,526.37, 1,056,418.02 and 421,354.94

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Solution

The fourth proportional to 765,526.37, 1,056,418.02 and 421,354.94 is: 581,465.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,526.37 : 1,056,418.02 = 421,354.94 : x
  2. Step 2: Convert to fraction form
    765,526.37/1,056,418.02 = 421,354.94/x
  3. Step 3: Cross multiply
    765,526.37x = 1,056,418.02 × 421,354.94
  4. Step 4: Simplify right side
    765,526.37x = 445,126,946,149.93
  5. Step 5: Solve for x
    x = 445,126,946,149.93/765,526.37
  6. Step 6: Final answer
    x = 581,465.21

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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.