Home / 778,520.85-1,167,220.82-478,381.32

Finding the Fourth Proportional to 778,520.85, 1,167,220.82 and 478,381.32

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Solution

The fourth proportional to 778,520.85, 1,167,220.82 and 478,381.32 is: 717,227.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,520.85 : 1,167,220.82 = 478,381.32 : x
  2. Step 2: Convert to fraction form
    778,520.85/1,167,220.82 = 478,381.32/x
  3. Step 3: Cross multiply
    778,520.85x = 1,167,220.82 × 478,381.32
  4. Step 4: Simplify right side
    778,520.85x = 558,376,636,603.08
  5. Step 5: Solve for x
    x = 558,376,636,603.08/778,520.85
  6. Step 6: Final answer
    x = 717,227.59

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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.