Home / 545,904.20-818,078.70-402,631.40

Finding the Fourth Proportional to 545,904.20, 818,078.70 and 402,631.40

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Solution

The fourth proportional to 545,904.20, 818,078.70 and 402,631.40 is: 603,373.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,904.20 : 818,078.70 = 402,631.40 : x
  2. Step 2: Convert to fraction form
    545,904.20/818,078.70 = 402,631.40/x
  3. Step 3: Cross multiply
    545,904.20x = 818,078.70 × 402,631.40
  4. Step 4: Simplify right side
    545,904.20x = 329,384,172,291.18
  5. Step 5: Solve for x
    x = 329,384,172,291.18/545,904.20
  6. Step 6: Final answer
    x = 603,373.58

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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.