Home / 687,777.60-1,031,666.40-475,201.20

Finding the Fourth Proportional to 687,777.60, 1,031,666.40 and 475,201.20

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Solution

The fourth proportional to 687,777.60, 1,031,666.40 and 475,201.20 is: 712,801.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,777.60 : 1,031,666.40 = 475,201.20 : x
  2. Step 2: Convert to fraction form
    687,777.60/1,031,666.40 = 475,201.20/x
  3. Step 3: Cross multiply
    687,777.60x = 1,031,666.40 × 475,201.20
  4. Step 4: Simplify right side
    687,777.60x = 490,249,111,279.68
  5. Step 5: Solve for x
    x = 490,249,111,279.68/687,777.60
  6. Step 6: Final answer
    x = 712,801.80

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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.