Home / 760,400.96-1,049,320.32-420,848.96

Finding the Fourth Proportional to 760,400.96, 1,049,320.32 and 420,848.96

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Solution

The fourth proportional to 760,400.96, 1,049,320.32 and 420,848.96 is: 580,753.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,400.96 : 1,049,320.32 = 420,848.96 : x
  2. Step 2: Convert to fraction form
    760,400.96/1,049,320.32 = 420,848.96/x
  3. Step 3: Cross multiply
    760,400.96x = 1,049,320.32 × 420,848.96
  4. Step 4: Simplify right side
    760,400.96x = 441,605,365,378.87
  5. Step 5: Solve for x
    x = 441,605,365,378.87/760,400.96
  6. Step 6: Final answer
    x = 580,753.30

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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.