Home / 650,970.77-898,132.07-421,703.80

Finding the Fourth Proportional to 650,970.77, 898,132.07 and 421,703.80

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Solution

The fourth proportional to 650,970.77, 898,132.07 and 421,703.80 is: 581,816.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,970.77 : 898,132.07 = 421,703.80 : x
  2. Step 2: Convert to fraction form
    650,970.77/898,132.07 = 421,703.80/x
  3. Step 3: Cross multiply
    650,970.77x = 898,132.07 × 421,703.80
  4. Step 4: Simplify right side
    650,970.77x = 378,745,705,629.80
  5. Step 5: Solve for x
    x = 378,745,705,629.80/650,970.77
  6. Step 6: Final answer
    x = 581,816.77

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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.