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Finding the Fourth Proportional to 648,009.90, 968,904.45 and 480,048.30

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Solution

The fourth proportional to 648,009.90, 968,904.45 and 480,048.30 is: 717,768.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,009.90 : 968,904.45 = 480,048.30 : x
  2. Step 2: Convert to fraction form
    648,009.90/968,904.45 = 480,048.30/x
  3. Step 3: Cross multiply
    648,009.90x = 968,904.45 × 480,048.30
  4. Step 4: Simplify right side
    648,009.90x = 465,120,934,084.94
  5. Step 5: Solve for x
    x = 465,120,934,084.94/648,009.90
  6. Step 6: Final answer
    x = 717,768.25

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1.5x scale

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.