Home / 908,459.74-1,253,699.70-521,307.88

Finding the Fourth Proportional to 908,459.74, 1,253,699.70 and 521,307.88

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Solution

The fourth proportional to 908,459.74, 1,253,699.70 and 521,307.88 is: 719,419.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,459.74 : 1,253,699.70 = 521,307.88 : x
  2. Step 2: Convert to fraction form
    908,459.74/1,253,699.70 = 521,307.88/x
  3. Step 3: Cross multiply
    908,459.74x = 1,253,699.70 × 521,307.88
  4. Step 4: Simplify right side
    908,459.74x = 653,563,532,763.64
  5. Step 5: Solve for x
    x = 653,563,532,763.64/908,459.74
  6. Step 6: Final answer
    x = 719,419.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.