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Finding the Fourth Proportional to 539,117.70, 808,158.15 and 419,108.10

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Solution

The fourth proportional to 539,117.70, 808,158.15 and 419,108.10 is: 628,259.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,117.70 : 808,158.15 = 419,108.10 : x
  2. Step 2: Convert to fraction form
    539,117.70/808,158.15 = 419,108.10/x
  3. Step 3: Cross multiply
    539,117.70x = 808,158.15 × 419,108.10
  4. Step 4: Simplify right side
    539,117.70x = 338,705,626,746.02
  5. Step 5: Solve for x
    x = 338,705,626,746.02/539,117.70
  6. Step 6: Final answer
    x = 628,259.15

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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.