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Finding the Fourth Proportional to 545,235.20, 817,852.80 and 520,740.80

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Solution

The fourth proportional to 545,235.20, 817,852.80 and 520,740.80 is: 781,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,235.20 : 817,852.80 = 520,740.80 : x
  2. Step 2: Convert to fraction form
    545,235.20/817,852.80 = 520,740.80/x
  3. Step 3: Cross multiply
    545,235.20x = 817,852.80 × 520,740.80
  4. Step 4: Simplify right side
    545,235.20x = 425,889,321,354.24
  5. Step 5: Solve for x
    x = 425,889,321,354.24/545,235.20
  6. Step 6: Final answer
    x = 781,111.20

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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.