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Finding the Fourth Proportional to 586,445.12, 879,740.12 and 207,287.67

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Solution

The fourth proportional to 586,445.12, 879,740.12 and 207,287.67 is: 310,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,445.12 : 879,740.12 = 207,287.67 : x
  2. Step 2: Convert to fraction form
    586,445.12/879,740.12 = 207,287.67/x
  3. Step 3: Cross multiply
    586,445.12x = 879,740.12 × 207,287.67
  4. Step 4: Simplify right side
    586,445.12x = 182,359,280,198.54
  5. Step 5: Solve for x
    x = 182,359,280,198.54/586,445.12
  6. Step 6: Final answer
    x = 310,957.11

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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.