Home / 690,543.96-952,976.40-380,459.16

Finding the Fourth Proportional to 690,543.96, 952,976.40 and 380,459.16

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Solution

The fourth proportional to 690,543.96, 952,976.40 and 380,459.16 is: 525,047.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,543.96 : 952,976.40 = 380,459.16 : x
  2. Step 2: Convert to fraction form
    690,543.96/952,976.40 = 380,459.16/x
  3. Step 3: Cross multiply
    690,543.96x = 952,976.40 × 380,459.16
  4. Step 4: Simplify right side
    690,543.96x = 362,568,600,643.82
  5. Step 5: Solve for x
    x = 362,568,600,643.82/690,543.96
  6. Step 6: Final answer
    x = 525,047.82

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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.