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Finding the Fourth Proportional to 648,444.60, 972,666 and 360,439.32

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Solution

The fourth proportional to 648,444.60, 972,666 and 360,439.32 is: 540,658.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,444.60 : 972,666 = 360,439.32 : x
  2. Step 2: Convert to fraction form
    648,444.60/972,666 = 360,439.32/x
  3. Step 3: Cross multiply
    648,444.60x = 972,666 × 360,439.32
  4. Step 4: Simplify right side
    648,444.60x = 350,587,071,627.12
  5. Step 5: Solve for x
    x = 350,587,071,627.12/648,444.60
  6. Step 6: Final answer
    x = 540,658.48

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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.