Home / 668,421.10-1,003,615.80-518,830.30

Finding the Fourth Proportional to 668,421.10, 1,003,615.80 and 518,830.30

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Solution

The fourth proportional to 668,421.10, 1,003,615.80 and 518,830.30 is: 779,009.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,421.10 : 1,003,615.80 = 518,830.30 : x
  2. Step 2: Convert to fraction form
    668,421.10/1,003,615.80 = 518,830.30/x
  3. Step 3: Cross multiply
    668,421.10x = 1,003,615.80 × 518,830.30
  4. Step 4: Simplify right side
    668,421.10x = 520,706,286,598.74
  5. Step 5: Solve for x
    x = 520,706,286,598.74/668,421.10
  6. Step 6: Final answer
    x = 779,009.35

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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.