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Finding the Fourth Proportional to 495,000.40, 741,188.40 and 390,024.40

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Solution

The fourth proportional to 495,000.40, 741,188.40 and 390,024.40 is: 584,002.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,000.40 : 741,188.40 = 390,024.40 : x
  2. Step 2: Convert to fraction form
    495,000.40/741,188.40 = 390,024.40/x
  3. Step 3: Cross multiply
    495,000.40x = 741,188.40 × 390,024.40
  4. Step 4: Simplify right side
    495,000.40x = 289,081,560,996.96
  5. Step 5: Solve for x
    x = 289,081,560,996.96/495,000.40
  6. Step 6: Final answer
    x = 584,002.68

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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.