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Finding the Fourth Proportional to 909,907.20, 1,364,860.80 and 898,097.40

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Solution

The fourth proportional to 909,907.20, 1,364,860.80 and 898,097.40 is: 1,347,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,907.20 : 1,364,860.80 = 898,097.40 : x
  2. Step 2: Convert to fraction form
    909,907.20/1,364,860.80 = 898,097.40/x
  3. Step 3: Cross multiply
    909,907.20x = 1,364,860.80 × 898,097.40
  4. Step 4: Simplify right side
    909,907.20x = 1,225,777,935,841.92
  5. Step 5: Solve for x
    x = 1,225,777,935,841.92/909,907.20
  6. Step 6: Final answer
    x = 1,347,146.10

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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.