Home / 1,287,269.40-1,930,320.90-488,285.40

Finding the Fourth Proportional to 1,287,269.40, 1,930,320.90 and 488,285.40

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Solution

The fourth proportional to 1,287,269.40, 1,930,320.90 and 488,285.40 is: 732,206.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,269.40 : 1,930,320.90 = 488,285.40 : x
  2. Step 2: Convert to fraction form
    1,287,269.40/1,930,320.90 = 488,285.40/x
  3. Step 3: Cross multiply
    1,287,269.40x = 1,930,320.90 × 488,285.40
  4. Step 4: Simplify right side
    1,287,269.40x = 942,547,512,784.86
  5. Step 5: Solve for x
    x = 942,547,512,784.86/1,287,269.40
  6. Step 6: Final answer
    x = 732,206.88

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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.