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Finding the Fourth Proportional to 545,310.80, 817,966.20 and 345,856.40

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Solution

The fourth proportional to 545,310.80, 817,966.20 and 345,856.40 is: 518,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,310.80 : 817,966.20 = 345,856.40 : x
  2. Step 2: Convert to fraction form
    545,310.80/817,966.20 = 345,856.40/x
  3. Step 3: Cross multiply
    545,310.80x = 817,966.20 × 345,856.40
  4. Step 4: Simplify right side
    545,310.80x = 282,898,845,253.68
  5. Step 5: Solve for x
    x = 282,898,845,253.68/545,310.80
  6. Step 6: Final answer
    x = 518,784.60

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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.