Home / 467,843.04-645,038.46-390,430.26

Finding the Fourth Proportional to 467,843.04, 645,038.46 and 390,430.26

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Solution

The fourth proportional to 467,843.04, 645,038.46 and 390,430.26 is: 538,305.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,843.04 : 645,038.46 = 390,430.26 : x
  2. Step 2: Convert to fraction form
    467,843.04/645,038.46 = 390,430.26/x
  3. Step 3: Cross multiply
    467,843.04x = 645,038.46 × 390,430.26
  4. Step 4: Simplify right side
    467,843.04x = 251,842,533,647.80
  5. Step 5: Solve for x
    x = 251,842,533,647.80/467,843.04
  6. Step 6: Final answer
    x = 538,305.61

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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.