Home / 1,287,001.81-1,931,011.19-488,495.31

Finding the Fourth Proportional to 1,287,001.81, 1,931,011.19 and 488,495.31

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Solution

The fourth proportional to 1,287,001.81, 1,931,011.19 and 488,495.31 is: 732,935.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,001.81 : 1,931,011.19 = 488,495.31 : x
  2. Step 2: Convert to fraction form
    1,287,001.81/1,931,011.19 = 488,495.31/x
  3. Step 3: Cross multiply
    1,287,001.81x = 1,931,011.19 × 488,495.31
  4. Step 4: Simplify right side
    1,287,001.81x = 943,289,909,872.52
  5. Step 5: Solve for x
    x = 943,289,909,872.52/1,287,001.81
  6. Step 6: Final answer
    x = 732,935.96

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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.