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Finding the Fourth Proportional to 570,562.79, 787,376.67 and 315,913.97

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Solution

The fourth proportional to 570,562.79, 787,376.67 and 315,913.97 is: 435,961.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,562.79 : 787,376.67 = 315,913.97 : x
  2. Step 2: Convert to fraction form
    570,562.79/787,376.67 = 315,913.97/x
  3. Step 3: Cross multiply
    570,562.79x = 787,376.67 × 315,913.97
  4. Step 4: Simplify right side
    570,562.79x = 248,743,290,488.84
  5. Step 5: Solve for x
    x = 248,743,290,488.84/570,562.79
  6. Step 6: Final answer
    x = 435,961.29

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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.