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Finding the Fourth Proportional to 491,740.80, 736,639.20 and 433,291.20

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Solution

The fourth proportional to 491,740.80, 736,639.20 and 433,291.20 is: 649,080.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,740.80 : 736,639.20 = 433,291.20 : x
  2. Step 2: Convert to fraction form
    491,740.80/736,639.20 = 433,291.20/x
  3. Step 3: Cross multiply
    491,740.80x = 736,639.20 × 433,291.20
  4. Step 4: Simplify right side
    491,740.80x = 319,179,282,935.04
  5. Step 5: Solve for x
    x = 319,179,282,935.04/491,740.80
  6. Step 6: Final answer
    x = 649,080.33

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1.5x scale

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.