Home / 818,254.08-1,129,498.56-478,831.68

Finding the Fourth Proportional to 818,254.08, 1,129,498.56 and 478,831.68

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Solution

The fourth proportional to 818,254.08, 1,129,498.56 and 478,831.68 is: 660,967.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,254.08 : 1,129,498.56 = 478,831.68 : x
  2. Step 2: Convert to fraction form
    818,254.08/1,129,498.56 = 478,831.68/x
  3. Step 3: Cross multiply
    818,254.08x = 1,129,498.56 × 478,831.68
  4. Step 4: Simplify right side
    818,254.08x = 540,839,693,042.38
  5. Step 5: Solve for x
    x = 540,839,693,042.38/818,254.08
  6. Step 6: Final answer
    x = 660,967.91

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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.