Home / 651,139.40-977,630.70-511,056.20

Finding the Fourth Proportional to 651,139.40, 977,630.70 and 511,056.20

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Solution

The fourth proportional to 651,139.40, 977,630.70 and 511,056.20 is: 767,307.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,139.40 : 977,630.70 = 511,056.20 : x
  2. Step 2: Convert to fraction form
    651,139.40/977,630.70 = 511,056.20/x
  3. Step 3: Cross multiply
    651,139.40x = 977,630.70 × 511,056.20
  4. Step 4: Simplify right side
    651,139.40x = 499,624,230,545.34
  5. Step 5: Solve for x
    x = 499,624,230,545.34/651,139.40
  6. Step 6: Final answer
    x = 767,307.63

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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.