Home / 688,714.40-1,031,030.40-512,004.80

Finding the Fourth Proportional to 688,714.40, 1,031,030.40 and 512,004.80

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Solution

The fourth proportional to 688,714.40, 1,031,030.40 and 512,004.80 is: 766,489.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,714.40 : 1,031,030.40 = 512,004.80 : x
  2. Step 2: Convert to fraction form
    688,714.40/1,031,030.40 = 512,004.80/x
  3. Step 3: Cross multiply
    688,714.40x = 1,031,030.40 × 512,004.80
  4. Step 4: Simplify right side
    688,714.40x = 527,892,513,745.92
  5. Step 5: Solve for x
    x = 527,892,513,745.92/688,714.40
  6. Step 6: Final answer
    x = 766,489.73

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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.