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Finding the Fourth Proportional to 545,123.52, 817,852.80 and 279,070.87

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Solution

The fourth proportional to 545,123.52, 817,852.80 and 279,070.87 is: 418,692.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,123.52 : 817,852.80 = 279,070.87 : x
  2. Step 2: Convert to fraction form
    545,123.52/817,852.80 = 279,070.87/x
  3. Step 3: Cross multiply
    545,123.52x = 817,852.80 × 279,070.87
  4. Step 4: Simplify right side
    545,123.52x = 228,238,891,393.52
  5. Step 5: Solve for x
    x = 228,238,891,393.52/545,123.52
  6. Step 6: Final answer
    x = 418,692.06

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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.