Home / 774,205.20-1,161,307.80-213,296.40

Finding the Fourth Proportional to 774,205.20, 1,161,307.80 and 213,296.40

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Solution

The fourth proportional to 774,205.20, 1,161,307.80 and 213,296.40 is: 319,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,205.20 : 1,161,307.80 = 213,296.40 : x
  2. Step 2: Convert to fraction form
    774,205.20/1,161,307.80 = 213,296.40/x
  3. Step 3: Cross multiply
    774,205.20x = 1,161,307.80 × 213,296.40
  4. Step 4: Simplify right side
    774,205.20x = 247,702,773,031.92
  5. Step 5: Solve for x
    x = 247,702,773,031.92/774,205.20
  6. Step 6: Final answer
    x = 319,944.60

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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.