Home / 990,804.60-1,486,206.90-648,320.40

Finding the Fourth Proportional to 990,804.60, 1,486,206.90 and 648,320.40

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Solution

The fourth proportional to 990,804.60, 1,486,206.90 and 648,320.40 is: 972,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,804.60 : 1,486,206.90 = 648,320.40 : x
  2. Step 2: Convert to fraction form
    990,804.60/1,486,206.90 = 648,320.40/x
  3. Step 3: Cross multiply
    990,804.60x = 1,486,206.90 × 648,320.40
  4. Step 4: Simplify right side
    990,804.60x = 963,538,251,890.76
  5. Step 5: Solve for x
    x = 963,538,251,890.76/990,804.60
  6. Step 6: Final answer
    x = 972,480.60

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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.