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Finding the Fourth Proportional to 710,887.68, 980,069.76 and 688,872.96

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Solution

The fourth proportional to 710,887.68, 980,069.76 and 688,872.96 is: 949,719.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,887.68 : 980,069.76 = 688,872.96 : x
  2. Step 2: Convert to fraction form
    710,887.68/980,069.76 = 688,872.96/x
  3. Step 3: Cross multiply
    710,887.68x = 980,069.76 × 688,872.96
  4. Step 4: Simplify right side
    710,887.68x = 675,143,556,577.69
  5. Step 5: Solve for x
    x = 675,143,556,577.69/710,887.68
  6. Step 6: Final answer
    x = 949,719.03

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1.5x scale

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.