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Finding the Fourth Proportional to 890,113, 1,330,282.65 and 650,730.84

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Solution

The fourth proportional to 890,113, 1,330,282.65 and 650,730.84 is: 972,523.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,113 : 1,330,282.65 = 650,730.84 : x
  2. Step 2: Convert to fraction form
    890,113/1,330,282.65 = 650,730.84/x
  3. Step 3: Cross multiply
    890,113x = 1,330,282.65 × 650,730.84
  4. Step 4: Simplify right side
    890,113x = 865,655,946,271.93
  5. Step 5: Solve for x
    x = 865,655,946,271.93/890,113
  6. Step 6: Final answer
    x = 972,523.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.