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Finding the Fourth Proportional to 570,403.77, 787,103.81 and 340,915.48

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Solution

The fourth proportional to 570,403.77, 787,103.81 and 340,915.48 is: 470,431.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,403.77 : 787,103.81 = 340,915.48 : x
  2. Step 2: Convert to fraction form
    570,403.77/787,103.81 = 340,915.48/x
  3. Step 3: Cross multiply
    570,403.77x = 787,103.81 × 340,915.48
  4. Step 4: Simplify right side
    570,403.77x = 268,335,874,270.71
  5. Step 5: Solve for x
    x = 268,335,874,270.71/570,403.77
  6. Step 6: Final answer
    x = 470,431.45

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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.