Home / 778,126.75-1,073,897.47-456,107.40

Finding the Fourth Proportional to 778,126.75, 1,073,897.47 and 456,107.40

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Solution

The fourth proportional to 778,126.75, 1,073,897.47 and 456,107.40 is: 629,476.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,126.75 : 1,073,897.47 = 456,107.40 : x
  2. Step 2: Convert to fraction form
    778,126.75/1,073,897.47 = 456,107.40/x
  3. Step 3: Cross multiply
    778,126.75x = 1,073,897.47 × 456,107.40
  4. Step 4: Simplify right side
    778,126.75x = 489,812,581,768.01
  5. Step 5: Solve for x
    x = 489,812,581,768.01/778,126.75
  6. Step 6: Final answer
    x = 629,476.60

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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.