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Finding the Fourth Proportional to 640,248.60, 960,090 and 340,658.16

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Solution

The fourth proportional to 640,248.60, 960,090 and 340,658.16 is: 510,836.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,248.60 : 960,090 = 340,658.16 : x
  2. Step 2: Convert to fraction form
    640,248.60/960,090 = 340,658.16/x
  3. Step 3: Cross multiply
    640,248.60x = 960,090 × 340,658.16
  4. Step 4: Simplify right side
    640,248.60x = 327,062,492,834.40
  5. Step 5: Solve for x
    x = 327,062,492,834.40/640,248.60
  6. Step 6: Final answer
    x = 510,836.72

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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.