Home / 428,848.85-642,461.31-286,264.19

Finding the Fourth Proportional to 428,848.85, 642,461.31 and 286,264.19

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Solution

The fourth proportional to 428,848.85, 642,461.31 and 286,264.19 is: 428,854.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,848.85 : 642,461.31 = 286,264.19 : x
  2. Step 2: Convert to fraction form
    428,848.85/642,461.31 = 286,264.19/x
  3. Step 3: Cross multiply
    428,848.85x = 642,461.31 × 286,264.19
  4. Step 4: Simplify right side
    428,848.85x = 183,913,668,119.64
  5. Step 5: Solve for x
    x = 183,913,668,119.64/428,848.85
  6. Step 6: Final answer
    x = 428,854.29

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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.