Home / 875,378.96-1,208,032.20-493,405.80

Finding the Fourth Proportional to 875,378.96, 1,208,032.20 and 493,405.80

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Solution

The fourth proportional to 875,378.96, 1,208,032.20 and 493,405.80 is: 680,905.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,378.96 : 1,208,032.20 = 493,405.80 : x
  2. Step 2: Convert to fraction form
    875,378.96/1,208,032.20 = 493,405.80/x
  3. Step 3: Cross multiply
    875,378.96x = 1,208,032.20 × 493,405.80
  4. Step 4: Simplify right side
    875,378.96x = 596,050,094,066.76
  5. Step 5: Solve for x
    x = 596,050,094,066.76/875,378.96
  6. Step 6: Final answer
    x = 680,905.21

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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.