Home / 767,139.48-1,058,666.40-427,571.28

Finding the Fourth Proportional to 767,139.48, 1,058,666.40 and 427,571.28

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Solution

The fourth proportional to 767,139.48, 1,058,666.40 and 427,571.28 is: 590,056.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,139.48 : 1,058,666.40 = 427,571.28 : x
  2. Step 2: Convert to fraction form
    767,139.48/1,058,666.40 = 427,571.28/x
  3. Step 3: Cross multiply
    767,139.48x = 1,058,666.40 × 427,571.28
  4. Step 4: Simplify right side
    767,139.48x = 452,655,347,740.99
  5. Step 5: Solve for x
    x = 452,655,347,740.99/767,139.48
  6. Step 6: Final answer
    x = 590,056.12

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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.