Home / 818,282.81-1,129,149.38-455,740.40

Finding the Fourth Proportional to 818,282.81, 1,129,149.38 and 455,740.40

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Solution

The fourth proportional to 818,282.81, 1,129,149.38 and 455,740.40 is: 628,876.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,282.81 : 1,129,149.38 = 455,740.40 : x
  2. Step 2: Convert to fraction form
    818,282.81/1,129,149.38 = 455,740.40/x
  3. Step 3: Cross multiply
    818,282.81x = 1,129,149.38 × 455,740.40
  4. Step 4: Simplify right side
    818,282.81x = 514,598,994,063.18
  5. Step 5: Solve for x
    x = 514,598,994,063.18/818,282.81
  6. Step 6: Final answer
    x = 628,876.70

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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.