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Finding the Fourth Proportional to 714,316.13, 985,800.62 and 472,178.78

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Solution

The fourth proportional to 714,316.13, 985,800.62 and 472,178.78 is: 651,636.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,316.13 : 985,800.62 = 472,178.78 : x
  2. Step 2: Convert to fraction form
    714,316.13/985,800.62 = 472,178.78/x
  3. Step 3: Cross multiply
    714,316.13x = 985,800.62 × 472,178.78
  4. Step 4: Simplify right side
    714,316.13x = 465,474,134,074.84
  5. Step 5: Solve for x
    x = 465,474,134,074.84/714,316.13
  6. Step 6: Final answer
    x = 651,636.04

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1.5x scale

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.