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Finding the Fourth Proportional to 585,087.75, 807,421.10 and 316,815.75

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Solution

The fourth proportional to 585,087.75, 807,421.10 and 316,815.75 is: 437,205.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,087.75 : 807,421.10 = 316,815.75 : x
  2. Step 2: Convert to fraction form
    585,087.75/807,421.10 = 316,815.75/x
  3. Step 3: Cross multiply
    585,087.75x = 807,421.10 × 316,815.75
  4. Step 4: Simplify right side
    585,087.75x = 255,803,719,778.25
  5. Step 5: Solve for x
    x = 255,803,719,778.25/585,087.75
  6. Step 6: Final answer
    x = 437,205.74

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1.5x scale

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.