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Finding the Fourth Proportional to 402,885.60, 604,328.40 and 378,002.40

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Solution

The fourth proportional to 402,885.60, 604,328.40 and 378,002.40 is: 567,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,885.60 : 604,328.40 = 378,002.40 : x
  2. Step 2: Convert to fraction form
    402,885.60/604,328.40 = 378,002.40/x
  3. Step 3: Cross multiply
    402,885.60x = 604,328.40 × 378,002.40
  4. Step 4: Simplify right side
    402,885.60x = 228,437,585,588.16
  5. Step 5: Solve for x
    x = 228,437,585,588.16/402,885.60
  6. Step 6: Final answer
    x = 567,003.60

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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.