Home / 687,881.17-1,031,279.06-434,627.85

Finding the Fourth Proportional to 687,881.17, 1,031,279.06 and 434,627.85

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Solution

The fourth proportional to 687,881.17, 1,031,279.06 and 434,627.85 is: 651,598.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,881.17 : 1,031,279.06 = 434,627.85 : x
  2. Step 2: Convert to fraction form
    687,881.17/1,031,279.06 = 434,627.85/x
  3. Step 3: Cross multiply
    687,881.17x = 1,031,279.06 × 434,627.85
  4. Step 4: Simplify right side
    687,881.17x = 448,222,600,597.82
  5. Step 5: Solve for x
    x = 448,222,600,597.82/687,881.17
  6. Step 6: Final answer
    x = 651,598.88

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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.