Home / 651,701.20-977,989.20-385,178.80

Finding the Fourth Proportional to 651,701.20, 977,989.20 and 385,178.80

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Solution

The fourth proportional to 651,701.20, 977,989.20 and 385,178.80 is: 578,026.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,701.20 : 977,989.20 = 385,178.80 : x
  2. Step 2: Convert to fraction form
    651,701.20/977,989.20 = 385,178.80/x
  3. Step 3: Cross multiply
    651,701.20x = 977,989.20 × 385,178.80
  4. Step 4: Simplify right side
    651,701.20x = 376,700,706,468.96
  5. Step 5: Solve for x
    x = 376,700,706,468.96/651,701.20
  6. Step 6: Final answer
    x = 578,026.72

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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.