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Finding the Fourth Proportional to 909,969.20, 1,364,953.80 and 898,159.40

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Solution

The fourth proportional to 909,969.20, 1,364,953.80 and 898,159.40 is: 1,347,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,969.20 : 1,364,953.80 = 898,159.40 : x
  2. Step 2: Convert to fraction form
    909,969.20/1,364,953.80 = 898,159.40/x
  3. Step 3: Cross multiply
    909,969.20x = 1,364,953.80 × 898,159.40
  4. Step 4: Simplify right side
    909,969.20x = 1,225,946,086,035.72
  5. Step 5: Solve for x
    x = 1,225,946,086,035.72/909,969.20
  6. Step 6: Final answer
    x = 1,347,239.10

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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.