Home / 689,615.80-1,034,715.30-437,090.20

Finding the Fourth Proportional to 689,615.80, 1,034,715.30 and 437,090.20

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Solution

The fourth proportional to 689,615.80, 1,034,715.30 and 437,090.20 is: 655,820.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,615.80 : 1,034,715.30 = 437,090.20 : x
  2. Step 2: Convert to fraction form
    689,615.80/1,034,715.30 = 437,090.20/x
  3. Step 3: Cross multiply
    689,615.80x = 1,034,715.30 × 437,090.20
  4. Step 4: Simplify right side
    689,615.80x = 452,263,917,420.06
  5. Step 5: Solve for x
    x = 452,263,917,420.06/689,615.80
  6. Step 6: Final answer
    x = 655,820.12

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1.5x scale

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.