Home / 760,859.32-1,049,972.90-421,320.28

Finding the Fourth Proportional to 760,859.32, 1,049,972.90 and 421,320.28

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Solution

The fourth proportional to 760,859.32, 1,049,972.90 and 421,320.28 is: 581,414.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,859.32 : 1,049,972.90 = 421,320.28 : x
  2. Step 2: Convert to fraction form
    760,859.32/1,049,972.90 = 421,320.28/x
  3. Step 3: Cross multiply
    760,859.32x = 1,049,972.90 × 421,320.28
  4. Step 4: Simplify right side
    760,859.32x = 442,374,876,220.41
  5. Step 5: Solve for x
    x = 442,374,876,220.41/760,859.32
  6. Step 6: Final answer
    x = 581,414.81

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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.