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Finding the Fourth Proportional to 605,417.10, 908,125.65 and 510,938.70

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Solution

The fourth proportional to 605,417.10, 908,125.65 and 510,938.70 is: 766,408.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,417.10 : 908,125.65 = 510,938.70 : x
  2. Step 2: Convert to fraction form
    605,417.10/908,125.65 = 510,938.70/x
  3. Step 3: Cross multiply
    605,417.10x = 908,125.65 × 510,938.70
  4. Step 4: Simplify right side
    605,417.10x = 463,996,539,047.66
  5. Step 5: Solve for x
    x = 463,996,539,047.66/605,417.10
  6. Step 6: Final answer
    x = 766,408.05

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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.