Home / 778,127.75-1,073,898.85-456,108.40

Finding the Fourth Proportional to 778,127.75, 1,073,898.85 and 456,108.40

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Solution

The fourth proportional to 778,127.75, 1,073,898.85 and 456,108.40 is: 629,477.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,127.75 : 1,073,898.85 = 456,108.40 : x
  2. Step 2: Convert to fraction form
    778,127.75/1,073,898.85 = 456,108.40/x
  3. Step 3: Cross multiply
    778,127.75x = 1,073,898.85 × 456,108.40
  4. Step 4: Simplify right side
    778,127.75x = 489,814,286,235.34
  5. Step 5: Solve for x
    x = 489,814,286,235.34/778,127.75
  6. Step 6: Final answer
    x = 629,477.98

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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.