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Finding the Fourth Proportional to 586,145.12, 808,880.72 and 317,873.12

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Solution

The fourth proportional to 586,145.12, 808,880.72 and 317,873.12 is: 438,665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,145.12 : 808,880.72 = 317,873.12 : x
  2. Step 2: Convert to fraction form
    586,145.12/808,880.72 = 317,873.12/x
  3. Step 3: Cross multiply
    586,145.12x = 808,880.72 × 317,873.12
  4. Step 4: Simplify right side
    586,145.12x = 257,121,438,174.25
  5. Step 5: Solve for x
    x = 257,121,438,174.25/586,145.12
  6. Step 6: Final answer
    x = 438,665.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.