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Finding the Fourth Proportional to 570,474.90, 787,225.38 and 312,302.38

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Solution

The fourth proportional to 570,474.90, 787,225.38 and 312,302.38 is: 430,960.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,474.90 : 787,225.38 = 312,302.38 : x
  2. Step 2: Convert to fraction form
    570,474.90/787,225.38 = 312,302.38/x
  3. Step 3: Cross multiply
    570,474.90x = 787,225.38 × 312,302.38
  4. Step 4: Simplify right side
    570,474.90x = 245,852,359,770.40
  5. Step 5: Solve for x
    x = 245,852,359,770.40/570,474.90
  6. Step 6: Final answer
    x = 430,960.87

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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.