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Finding the Fourth Proportional to 438,666.20, 657,999.30 and 367,807.40

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Solution

The fourth proportional to 438,666.20, 657,999.30 and 367,807.40 is: 551,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,666.20 : 657,999.30 = 367,807.40 : x
  2. Step 2: Convert to fraction form
    438,666.20/657,999.30 = 367,807.40/x
  3. Step 3: Cross multiply
    438,666.20x = 657,999.30 × 367,807.40
  4. Step 4: Simplify right side
    438,666.20x = 242,017,011,734.82
  5. Step 5: Solve for x
    x = 242,017,011,734.82/438,666.20
  6. Step 6: Final answer
    x = 551,711.10

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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.