Home / 438,008.20-657,012.30-297,003.40

Finding the Fourth Proportional to 438,008.20, 657,012.30 and 297,003.40

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Solution

The fourth proportional to 438,008.20, 657,012.30 and 297,003.40 is: 445,505.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,008.20 : 657,012.30 = 297,003.40 : x
  2. Step 2: Convert to fraction form
    438,008.20/657,012.30 = 297,003.40/x
  3. Step 3: Cross multiply
    438,008.20x = 657,012.30 × 297,003.40
  4. Step 4: Simplify right side
    438,008.20x = 195,134,886,941.82
  5. Step 5: Solve for x
    x = 195,134,886,941.82/438,008.20
  6. Step 6: Final answer
    x = 445,505.10

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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.