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Finding the Fourth Proportional to 879,551.20, 1,319,326.80 and 774,488.80

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Solution

The fourth proportional to 879,551.20, 1,319,326.80 and 774,488.80 is: 1,161,733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,551.20 : 1,319,326.80 = 774,488.80 : x
  2. Step 2: Convert to fraction form
    879,551.20/1,319,326.80 = 774,488.80/x
  3. Step 3: Cross multiply
    879,551.20x = 1,319,326.80 × 774,488.80
  4. Step 4: Simplify right side
    879,551.20x = 1,021,803,830,139.84
  5. Step 5: Solve for x
    x = 1,021,803,830,139.84/879,551.20
  6. Step 6: Final answer
    x = 1,161,733.20

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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.