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Finding the Fourth Proportional to 388,924.20, 583,386.30 and 365,304.60

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Solution

The fourth proportional to 388,924.20, 583,386.30 and 365,304.60 is: 547,956.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,924.20 : 583,386.30 = 365,304.60 : x
  2. Step 2: Convert to fraction form
    388,924.20/583,386.30 = 365,304.60/x
  3. Step 3: Cross multiply
    388,924.20x = 583,386.30 × 365,304.60
  4. Step 4: Simplify right side
    388,924.20x = 213,113,698,966.98
  5. Step 5: Solve for x
    x = 213,113,698,966.98/388,924.20
  6. Step 6: Final answer
    x = 547,956.90

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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.