Home / 760,831.09-1,049,978.55-421,299.34

Finding the Fourth Proportional to 760,831.09, 1,049,978.55 and 421,299.34

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Solution

The fourth proportional to 760,831.09, 1,049,978.55 and 421,299.34 is: 581,410.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,831.09 : 1,049,978.55 = 421,299.34 : x
  2. Step 2: Convert to fraction form
    760,831.09/1,049,978.55 = 421,299.34/x
  3. Step 3: Cross multiply
    760,831.09x = 1,049,978.55 × 421,299.34
  4. Step 4: Simplify right side
    760,831.09x = 442,355,270,129.16
  5. Step 5: Solve for x
    x = 442,355,270,129.16/760,831.09
  6. Step 6: Final answer
    x = 581,410.61

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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.