Home / 778,521.35-1,167,221.57-478,381.82

Finding the Fourth Proportional to 778,521.35, 1,167,221.57 and 478,381.82

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Solution

The fourth proportional to 778,521.35, 1,167,221.57 and 478,381.82 is: 717,228.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,521.35 : 1,167,221.57 = 478,381.82 : x
  2. Step 2: Convert to fraction form
    778,521.35/1,167,221.57 = 478,381.82/x
  3. Step 3: Cross multiply
    778,521.35x = 1,167,221.57 × 478,381.82
  4. Step 4: Simplify right side
    778,521.35x = 558,377,578,999.86
  5. Step 5: Solve for x
    x = 558,377,578,999.86/778,521.35
  6. Step 6: Final answer
    x = 717,228.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.