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Finding the Fourth Proportional to 571,277.20, 856,915.80 and 480,038.80

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Solution

The fourth proportional to 571,277.20, 856,915.80 and 480,038.80 is: 720,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,277.20 : 856,915.80 = 480,038.80 : x
  2. Step 2: Convert to fraction form
    571,277.20/856,915.80 = 480,038.80/x
  3. Step 3: Cross multiply
    571,277.20x = 856,915.80 × 480,038.80
  4. Step 4: Simplify right side
    571,277.20x = 411,352,832,333.04
  5. Step 5: Solve for x
    x = 411,352,832,333.04/571,277.20
  6. Step 6: Final answer
    x = 720,058.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.