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Finding the Fourth Proportional to 545,038.20, 817,460.10 and 345,000.60

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Solution

The fourth proportional to 545,038.20, 817,460.10 and 345,000.60 is: 517,439.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,038.20 : 817,460.10 = 345,000.60 : x
  2. Step 2: Convert to fraction form
    545,038.20/817,460.10 = 345,000.60/x
  3. Step 3: Cross multiply
    545,038.20x = 817,460.10 × 345,000.60
  4. Step 4: Simplify right side
    545,038.20x = 282,024,224,976.06
  5. Step 5: Solve for x
    x = 282,024,224,976.06/545,038.20
  6. Step 6: Final answer
    x = 517,439.37

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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.