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Finding the Fourth Proportional to 495,005.40, 741,195.90 and 390,029.40

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Solution

The fourth proportional to 495,005.40, 741,195.90 and 390,029.40 is: 584,010.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,005.40 : 741,195.90 = 390,029.40 : x
  2. Step 2: Convert to fraction form
    495,005.40/741,195.90 = 390,029.40/x
  3. Step 3: Cross multiply
    495,005.40x = 741,195.90 × 390,029.40
  4. Step 4: Simplify right side
    495,005.40x = 289,088,192,159.46
  5. Step 5: Solve for x
    x = 289,088,192,159.46/495,005.40
  6. Step 6: Final answer
    x = 584,010.18

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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.