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Finding the Fourth Proportional to 621,125.52, 857,184.03 and 379,368.96

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Solution

The fourth proportional to 621,125.52, 857,184.03 and 379,368.96 is: 523,547.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,125.52 : 857,184.03 = 379,368.96 : x
  2. Step 2: Convert to fraction form
    621,125.52/857,184.03 = 379,368.96/x
  3. Step 3: Cross multiply
    621,125.52x = 857,184.03 × 379,368.96
  4. Step 4: Simplify right side
    621,125.52x = 325,189,013,989.71
  5. Step 5: Solve for x
    x = 325,189,013,989.71/621,125.52
  6. Step 6: Final answer
    x = 523,547.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.