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Finding the Fourth Proportional to 486,442.40, 728,108.40 and 346,474.40

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Solution

The fourth proportional to 486,442.40, 728,108.40 and 346,474.40 is: 518,603.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,442.40 : 728,108.40 = 346,474.40 : x
  2. Step 2: Convert to fraction form
    486,442.40/728,108.40 = 346,474.40/x
  3. Step 3: Cross multiply
    486,442.40x = 728,108.40 × 346,474.40
  4. Step 4: Simplify right side
    486,442.40x = 252,270,921,024.96
  5. Step 5: Solve for x
    x = 252,270,921,024.96/486,442.40
  6. Step 6: Final answer
    x = 518,603.89

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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.