Home / 545,117.20-817,821.60-387,653.20

Finding the Fourth Proportional to 545,117.20, 817,821.60 and 387,653.20

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Solution

The fourth proportional to 545,117.20, 817,821.60 and 387,653.20 is: 581,583.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,117.20 : 817,821.60 = 387,653.20 : x
  2. Step 2: Convert to fraction form
    545,117.20/817,821.60 = 387,653.20/x
  3. Step 3: Cross multiply
    545,117.20x = 817,821.60 × 387,653.20
  4. Step 4: Simplify right side
    545,117.20x = 317,031,160,269.12
  5. Step 5: Solve for x
    x = 317,031,160,269.12/545,117.20
  6. Step 6: Final answer
    x = 581,583.48

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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.