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Finding the Fourth Proportional to 560,815.06, 773,897.79 and 319,075.06

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Solution

The fourth proportional to 560,815.06, 773,897.79 and 319,075.06 is: 440,308.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,815.06 : 773,897.79 = 319,075.06 : x
  2. Step 2: Convert to fraction form
    560,815.06/773,897.79 = 319,075.06/x
  3. Step 3: Cross multiply
    560,815.06x = 773,897.79 × 319,075.06
  4. Step 4: Simplify right side
    560,815.06x = 246,931,483,778.12
  5. Step 5: Solve for x
    x = 246,931,483,778.12/560,815.06
  6. Step 6: Final answer
    x = 440,308.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.