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Finding the Fourth Proportional to 603,139.20, 903,931.20 and 462,199.20

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Solution

The fourth proportional to 603,139.20, 903,931.20 and 462,199.20 is: 692,702.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,139.20 : 903,931.20 = 462,199.20 : x
  2. Step 2: Convert to fraction form
    603,139.20/903,931.20 = 462,199.20/x
  3. Step 3: Cross multiply
    603,139.20x = 903,931.20 × 462,199.20
  4. Step 4: Simplify right side
    603,139.20x = 417,796,277,495.04
  5. Step 5: Solve for x
    x = 417,796,277,495.04/603,139.20
  6. Step 6: Final answer
    x = 692,702.91

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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.