Home / 430,290.48-645,326.04-305,106.60

Finding the Fourth Proportional to 430,290.48, 645,326.04 and 305,106.60

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Solution

The fourth proportional to 430,290.48, 645,326.04 and 305,106.60 is: 457,582.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,290.48 : 645,326.04 = 305,106.60 : x
  2. Step 2: Convert to fraction form
    430,290.48/645,326.04 = 305,106.60/x
  3. Step 3: Cross multiply
    430,290.48x = 645,326.04 × 305,106.60
  4. Step 4: Simplify right side
    430,290.48x = 196,893,233,955.86
  5. Step 5: Solve for x
    x = 196,893,233,955.86/430,290.48
  6. Step 6: Final answer
    x = 457,582.13

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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.