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Finding the Fourth Proportional to 578,276.40, 866,248.20 and 328,666.80

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Solution

The fourth proportional to 578,276.40, 866,248.20 and 328,666.80 is: 492,337.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,276.40 : 866,248.20 = 328,666.80 : x
  2. Step 2: Convert to fraction form
    578,276.40/866,248.20 = 328,666.80/x
  3. Step 3: Cross multiply
    578,276.40x = 866,248.20 × 328,666.80
  4. Step 4: Simplify right side
    578,276.40x = 284,707,023,899.76
  5. Step 5: Solve for x
    x = 284,707,023,899.76/578,276.40
  6. Step 6: Final answer
    x = 492,337.27

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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.