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Finding the Fourth Proportional to 653,658.40, 980,835.90 and 254,312.20

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Solution

The fourth proportional to 653,658.40, 980,835.90 and 254,312.20 is: 381,603.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,658.40 : 980,835.90 = 254,312.20 : x
  2. Step 2: Convert to fraction form
    653,658.40/980,835.90 = 254,312.20/x
  3. Step 3: Cross multiply
    653,658.40x = 980,835.90 × 254,312.20
  4. Step 4: Simplify right side
    653,658.40x = 249,438,535,567.98
  5. Step 5: Solve for x
    x = 249,438,535,567.98/653,658.40
  6. Step 6: Final answer
    x = 381,603.81

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1.5x scale

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.