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Finding the Fourth Proportional to 570,506.67, 787,328.24 and 315,885.87

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Solution

The fourth proportional to 570,506.67, 787,328.24 and 315,885.87 is: 435,938.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,506.67 : 787,328.24 = 315,885.87 : x
  2. Step 2: Convert to fraction form
    570,506.67/787,328.24 = 315,885.87/x
  3. Step 3: Cross multiply
    570,506.67x = 787,328.24 × 315,885.87
  4. Step 4: Simplify right side
    570,506.67x = 248,705,864,488.54
  5. Step 5: Solve for x
    x = 248,705,864,488.54/570,506.67
  6. Step 6: Final answer
    x = 435,938.57

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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.