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Finding the Fourth Proportional to 438,490.94, 604,784.07 and 377,340.20

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Solution

The fourth proportional to 438,490.94, 604,784.07 and 377,340.20 is: 520,442.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,490.94 : 604,784.07 = 377,340.20 : x
  2. Step 2: Convert to fraction form
    438,490.94/604,784.07 = 377,340.20/x
  3. Step 3: Cross multiply
    438,490.94x = 604,784.07 × 377,340.20
  4. Step 4: Simplify right side
    438,490.94x = 228,209,343,515.28
  5. Step 5: Solve for x
    x = 228,209,343,515.28/438,490.94
  6. Step 6: Final answer
    x = 520,442.55

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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.