Home / 842,486.40-1,263,729.60-488,411.10

Finding the Fourth Proportional to 842,486.40, 1,263,729.60 and 488,411.10

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Solution

The fourth proportional to 842,486.40, 1,263,729.60 and 488,411.10 is: 732,616.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,486.40 : 1,263,729.60 = 488,411.10 : x
  2. Step 2: Convert to fraction form
    842,486.40/1,263,729.60 = 488,411.10/x
  3. Step 3: Cross multiply
    842,486.40x = 1,263,729.60 × 488,411.10
  4. Step 4: Simplify right side
    842,486.40x = 617,219,564,038.56
  5. Step 5: Solve for x
    x = 617,219,564,038.56/842,486.40
  6. Step 6: Final answer
    x = 732,616.65

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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.