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Finding the Fourth Proportional to 648,386.60, 972,578.88 and 360,381.40

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Solution

The fourth proportional to 648,386.60, 972,578.88 and 360,381.40 is: 540,571.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,386.60 : 972,578.88 = 360,381.40 : x
  2. Step 2: Convert to fraction form
    648,386.60/972,578.88 = 360,381.40/x
  3. Step 3: Cross multiply
    648,386.60x = 972,578.88 × 360,381.40
  4. Step 4: Simplify right side
    648,386.60x = 350,499,338,384.83
  5. Step 5: Solve for x
    x = 350,499,338,384.83/648,386.60
  6. Step 6: Final answer
    x = 540,571.53

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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.