Home / 880,726.77-1,215,396.09-478,318.77

Finding the Fourth Proportional to 880,726.77, 1,215,396.09 and 478,318.77

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Solution

The fourth proportional to 880,726.77, 1,215,396.09 and 478,318.77 is: 660,076.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,726.77 : 1,215,396.09 = 478,318.77 : x
  2. Step 2: Convert to fraction form
    880,726.77/1,215,396.09 = 478,318.77/x
  3. Step 3: Cross multiply
    880,726.77x = 1,215,396.09 × 478,318.77
  4. Step 4: Simplify right side
    880,726.77x = 581,346,762,831.61
  5. Step 5: Solve for x
    x = 581,346,762,831.61/880,726.77
  6. Step 6: Final answer
    x = 660,076.18

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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.